May 2013

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Topvex FR - False ceiling energy recovery units up to 1600 cfm. Compact ..... 1500. 2000. 2500. 3000. 3500. 4000. Q [cfm]. 0. 100. Ps [Pa]. 0. 200. 300. 400. 500.
Fans | Air Handling Units | Air Distribution Products | Fire Safety | Air Curtains and Heating Products | Tunnel Fans

Product Catalog Edition IV

systemair

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Introduction

Welcome to Systemair! High-performance and reliable ventilation technology is our goal – your trust our drive. To make sure you can look to the future with confidence, we work daily on new, highly efficient and advanced solutions. With these pages you will get to know what we‘ve come up with: fresh ideas and product innovations for the most varying of challenges in the area of ventilation technology. © Systemair 2013 Systemair reserves the right to make technical changes. For updated documentation, please refer to www.systemair.net

Innovative. Intelligent. Inspiring.

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Contents Introduction 2 Air handling units Topvex FR 14 Topvex TR 22 ERV RT-EC 34 Fans MUB 42 K EC 50 DVC P/S 56 Air distribution products 66 Accessories 88 Wiring diagrams 94 Theory 98 Index 123

Systemair has been taking care of Indoor Air Quality (IAQ) as an essential resource since 1974. Today Systemair is one of the leading ventilation companies worldwide. A success story, which started in Skinnskatteberg, Sweden with the invention of the inline duct fan. This invention revolutionised the ventilation world. Since then the company has continuously advanced and now offers a comprehensive range of products for all ventilation requirements.

The experts at Systemair have the required knowledge and understanding in finding solutions when considering the ventilation of shopping centres, domestic ventilation of a family home to the complex ventilation of tunnels and metro stations. More than 3100 employees and in excess of 60 subsidiaries in 44 countries are available to our customers. Detailed product information can be found on our website www.systemair.net

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Introduction

Systemair The straight way The straight way was our first production idea and led to the circular duct fan. Today “the straight path” represents our ambition to simplify the life of our customers. High product quality, correct technical data and fast deliveries are always in focus.

Systemair Systemair was established in Sweden in 1974 and is today the parent company in an international group with 60 subsidiaries and approximately 3100 employees. The group's head office and largest production plant is located in Skinnskatteberg with some 400 employees and a floor area of 538.000 ft2 (50.000 m2).

Production We are proud of our production plants. The aim has been to have both effective production of bulk products and, at the same time, an efficient and flexible approach to producing small volumes. This has steered our choice of machinery and how we plan our production, with focus on the working environment. Our premises are light and pleasant and we invest in tools that facilitate work and provide our employees with a safe and efficient workplace. The Group manufactures products in 15 production facilities in Europe, North America and Asia, with a total manufacturing floor space of 2.000.000 ft2 (190.000 m2)

Technical data Systemair puts significant assets toward development of energy efficient, environment friendly and user friendly ventilation products. We have five development centers located in Sweden, Germany, Canada, Slovakia and the United States at our disposal. More than 80 engineers from 13 development teams on three continents work on product development. With our broad geographic reach, we can carefully follow current trends in various parts of the world. We also actively influence future trends by taking part in the specification of new international and national ­standards.

Quality and environment Nine of our production facilities have ISO 9001 certification and two of them earned ISO 14001 environmental certification, Our quality system allows us to continuously improve our products and our customer service. Certification means that we have undertaken measures to minimise our environmental impact. We always take the environment into consideration when we choose sub-suppliers, materials, production methods, etc. An important factor is that we continuously work to reduce our energy consumption and reduce waste. Through increased recovery and heightened awareness we have been able to reduce our waste by 90%.

Dal, Eidsvoll, Norway In Eidsvoll, Norway we manufacture air handling units for the Norwegian market. The Norwegian warehouse for fans is also located here.

Bouctouche, Canada Our largest Canadian facility is located in Bouctouche, New Brunswick, where we produce energy and heat recovery ventilators. The Bouctouche facility is also home to our Canadian center of development.

Aylmer, Canada Aylmer is home to our school classroom ventilation equipment, where we develop, engineer, service and manufacture the Change’Air product family.

Lenexa, USA Our ISO certified manufacturing and distribution center for residential and commercial ventilation products for the North and South American markets is located in Lenexa, Kansas.

Production in Skinnskatteberg is virtually fully automated with modern machinery featuring advanced computer support. Also located here is the company's most advanced test installation for measuring technical data.

Detailed product information can be found on our website www.systemair.net

Introduction

Hässleholm, Sweden

Skinnskatteberg, Sweden Main plant Here is home to our worldwide headquarters, our largest production facility, as well as our principal distribution center. This heavily automated production plant features ultra-modern machinery and advanced computer technology.

Klockargården Systemair's air handling units for European market are made at Klockargården in Skinnskatteber­g. Frico’s central warehouse of approximately 86.000 ft 2 (8.000 m2) is also located here.

VEAB VEAB is the leading European manufacturer of duct heaters - producing heating and cooling coils for both electric- and water-based applications.

Ukmerge, Lithuania Produces energy efficient air handling units for the European markets.

Bratislava, Slovakia Manufactures air distribution products and EN-certified fire and smoke dampers.

Maribor, Slovenia Here we specialize in centrifugal smoke extractors for high temperatures.

New Delhi, India The factories in New Delhi and Noida manufacture grilles and diffusers. Systemair Software is also based here. The combined factory area has a size of approximately 70.000 ft2 (6.500 m2) with a total of 290 employees.

Kuala Lumpur, Malaysia Manufactures and distributes a variety of ventilation products for the Asian markets.

Madrid, Spain

Hasselager, Denmark

Windischbuch, Germany

Producing air handling units for South European markets and Northern Africa.

The factory in Hasselager, Denmark manufactures large air handling units. All production here is order based.

This facility produces fans, modular air handling units and engineered products for such uses as tunnel, jet fans for underground parking lots.

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Introduction

Product Overview Systemair has a wide range of ventilation products for use in various applications from small office premises to larger industrial applications. Common to all items in the range is that components have been developed to satisfy stringent demands for low energy consumption. The products have all undergone extensive testing, both in the laboratory and out in the field, in order to comply with current and future demands for low energy consumption. All products are also manufactured to comply with environmental requirements.

Topvex FR - False ceiling energy recovery units up to 1600 cfm Compact and easy to maintain air handling unit with sensible and latent recovery and control system. Mounted in a false ceiling or in the attic.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-21

Topvex TR - Vertical energy recovery units up to 2000 cfm A broad range of vertical air handling units with sensible and latent recovery. Useable everywhere from minor premises to schools, stores and larger offices.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-33

ERV RT-EC - Energy recovery units up to 4600 cfm These units are exclusively engineered to meet today’s latest energy requirements by using the most efficient impeller design and a state of the art rotating heat exchanger.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-41

Introduction

MUB - Commercial inline fans up to 6000 cfm Systemair’s square inline fans have been developed for use in compact exhaust and supply air systems. This range is available in a wide performance spectrum.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-49

K EC - Inline fans up to 800 cfm Systemair offers K-range fans for systems with higher pressure losses.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50-55

DVC - Roof exhaust fans up to 7600 cfm Systemair roof fans with square connection are available for vertical discharge.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 56-65

Air distribution products Systemair’s range also includes a wide selection of air distribution products suitable for a variety of applications and requirements.

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 66-85

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Introduction

A good indoor climate is important We often take natural resources such as fresh air for granted. We must however remain frugal with this essential resource and mindful of maintaining a responsible balance between the design of good ventilation systems and considering energy consumption and well thought out material usage and production methods. Our strategy for many years has been to develop energy-efficient products with integral energy recovery and EC technology-based fans in order to be able to offer a product portfolio fully satisfying current and future requirements. Systemair’s low energy consumption EC-products carry the Green Ventilation registered trademark. Energy recovery In areas of the country that experience moderate to severe weather conditions, Systemair ventilation systems employ effective energy recovery that returns energy from the exhaust air to the supply air. A good rotating energy exchanger can recover up to 90% of the total energy present. Energy-efficient fans Today, a new generation of fan motors contributes to a dramatic reduction in

energy consumption, as much as 50% in some cases. The new EC motors are better suited for speed control functions, which is where considerable energy savings can be made. A bonus of this is also quieter operation. Pressure The design of the duct system and the unit has an impact on the required system pressure. There is often a lot of energy to be saved here.

Free cooling Free cooling is used to save energy by using the cold outdoor air to cool down the building during the night. Quality-certified products How can you choose the right solution and product when there are so many alternatives? Nowadays, most major suppliers are ISO9001-certified and have AHRI-marked products, but is that enough?

Systemair’s most modern development centre in Canada

At Systemair we have gone one step further and work hard to ensure that our products maintain a high standard and are approved by various bodies. For units, this may mean Eurovent certification or other local certification for the country in question. To achieve this, you need resources and expertise.

Our North American Research centre is now equipped with our largest environmental chamber with the capability of reaching temperatures ranging from -40°F to +104°F (-40°C to +40°C). It offers designers the opportunity to test out new concepts and validate designs in house. We all know that equipment alone doesn’t make products and it takes good people and teamwork to make everything run smoothly.

As with all business, it is crucial find better ways to meet client demand and change is inevitable. But with change comes opportunity and this why these times are so exciting for Systemair. As well as the test centre in Bouctouche, there are also test facilities in Sweden, Germany, Denmark, Slovakia and the United States.

Introduction

Planning tools We have developed this product overview to make it easier for you to get an idea of which product best suits your specific needs. More detailed analysis or planning usually requires additional information, which is where the following tools come in. Product catalogue and specification data More detailed technical information, sufficient to carry out complete planning, is available in separate catalogues and specification data. These describe all incorporated functions, available accessories, and additional technical data.

Online catalogue For those who prefer to work online, it is possible to select most products using Systemair’s online catalogue.

Personal support Systemair aims to have local expertise close to the customer. We do our utmost to ensure that we have our own representatives in the markets where we operate. You can find up-to-date information and contact details on our website www.systemair.net

net

stemair.

www.sy

Product Key

TOPVEX FR1600EL-208-3-CAV Family Name Duct connection size Airflow at 0.4 in.wg (ESP) Post-heater type (Electical/Hot Water) Supply voltage Phase Type of fan control

MUB 16-120-1

*208-3-CAV - This part of the model name does not appear in the print catalogue, however it is available online

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Introduction Offices Office buildings generally require good ventilation during the day as well as heat recovery and conditioning of supply air depending on external conditions. Ventilation systems with demand control should be considered for offices where staffing levels vary. As a rule, offices develop an excess of heat produced by people, lighting, solar radiation, computer equipment, etc. If the office is in a city environment, a higher filtration class should be used. In an office environment, there is also considerable need to reduce the noise generated by the ventilation system.

Schools/day nurseries A school environment means a lot of people present at certain times of the day, and generally there are relatively large variations. This means that it should be possible to use demand control for the ventilation system. Normally, heat recovery is warranted.

Shops As a rule, the number of people in a shop changes constantly throughout the day, making a control-on-demand ventilation system the sensible option. Recirculating air in combination with carbon dioxide control (CO2) and heat recovery can be one optimised solution for these types of premises. When there are few people present, CO2 levels will be low and an increased amount of return air can be mixed into the system. As the number of people present increases, the amount of return air is reduced and replaced with fresh outdoor air.

Introduction Industry Industrial premises will often have high airflows if the work carried out there generates high levels of air pollution. If the pollutants are also aggressive, there may be requirements that affect the choice of material used. Systemair offers products for different environmental classes that can cope with tough environments. Filtration of processed air can be adapted to suit specific demands.

Hotels The requirements for ventilation in hotels are characterised by demands relating to fire protection, demand control and low noise levels. The choice of air handling unit will be affected by these demands. What is important here is good functions for speed control and quiet operation. In addition to quiet air handling units with demand control, Systemair can also supply fans and dampers for fire protection.

Healthcare premises Healthcare premises can encompass numerous activities, everything from operating rooms to overnight wards. The activity determines the requirements. Operating rooms will have stringent demands for cleanliness and ventilation. Wards require low noise levels. If several areas are served by the same system, the unit must have demand control and possibly even sub-systems. Systemair’s range of air handling units can satisfy most requirements relating to healthcare premises, whether these have to do with air cleanliness, noise levels or demand control.

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Air Distribution Products

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Air Handling Units

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Air Handling Units

Topvex FR

Electrical accessories

• Airflows 300 - 1600 cfm • Low overall height • Integrated control system - pre-programmed controller - BMS compatible • Constant airflow- (CAV) or duct pressure- (VAV) controlling • Galvalume sheet metal

Pre-heater p. 92

Topvex FR is a range of energy recovery ventilators with a low overall height and double rotating heat exchangers. The units are especially designed for maximum energy transfer at the lowest operating costs.

RVAZ4..24 p. 92

Topvex FR800-1600 is a series of efficient ventila­tion units designed for offices, shops, schools, daycare centres or similar premises. The units are designed for very low energy use and high efficiency. Drain pans are not required, making the unit very flexible to install.

TG-UH p. 91

It could not be simpler! The units are supplied preprogrammed, tested and ready to install. Connect the duct system, any external components, the power supply, and set the timer and fan speed. Installation is now complete. Low overall height The unique design with double rotating heat exchangers makes it possible to produce the units with a low overall height. Using the enclosed suspension device, the unit can be installed in a false ceiling. To further simplify the use when mounted in a false ceiling, the hinges can be split, and the panels opened as doors.

Pre-heater The pre-heater enables the system to perform in extremely cold climates to preserve performance and ensure a continuous supply of air. It does this by warming the outdoor air before it enters the energy recovery wheel.

EC fan motors Unlike motors with frequency converters, EC motors ensure excellent efficiency even at low speeds. This contributes to low operating costs. EC motors are also very quiet when running at high and low speeds.

IR24-P p. 92

E-OR p. 91

The preheater is designed to keep the temperature above the frost threshold while remaining within the temperature range of the system.

E-Bacnet p. 91

SPECIFICATION data

Voltage/Frequency

60Hz

FR800EL

FR800HW

FR1600EL

FR1600HW

208V

208V

208V

208V

Phase

~

3

3

3

3

Current (with Pre-heater)

A

13 (20)

7 (14)

20 (36)

7 (23)

Power rating, motors

W

2x477

2x477

2x941

2x941

Power rating, Post-heater

W

4500

-

9000

-

Power rating, Pre-heater

W

MCA (w/Pre-heater)

A

16 (25)

8 (17)

24 (44)

9 (28)

MOP (w/Pre-heater)

A

20 (25)

15 (20)

25 (45)

15 (30)

Operational temperature Weight Filter, supply/extract air

°F (°C) lbs (kg) MERV

4500

-13...104 (-25...40)

CO2RT p. 91

9000

-13...104 (-25...40)

395 (179)

395 (179)

565 (256)

565 (256)

13/9

13/9

13/9

13/9

Air Handling Units Ventilation accessories

Working range Q [cfm] 500

1000

1500

2000

2500

3000

3500

4000

2,5 Topvex FR800 Topvex FR1600

600

Ps [Pa]

Ps [in.wg]

0

500

2,0

EFD + AF24 p. 89

400

1,5

300 1,0 200 0,5

ZTR/ZTV p. 93

100 0

0 0

200

400

600

800

1000

1200

1400

1600

1800

LD p. 88

2000 Q [l/s]

FC p. 90

BFT p. 91

Accessories FUNCTION

DESCRIPTION

MODEL NAME

Shut-off damper

1 for exhaust air and 1 for outdoor air

EFD

Water heater control

Valve and valve actuator

ZTV/ZTR and RVAZ4 24A

Room control

Room sensor without set point dial

TG-R5/PT1000

ACCESSORIES

Topvex FR800

Topvex FR1600

Shut-off damper

EFD 12

EFD 16

Valve actuator

RVAZ4 24A

RVAZ4 24A

Valve, 2-way

ZTV 15-1.0

ZTV 15-1.0

Valve, 3-way

ZTR 15-1.0

ZTR 15-1.6

Room temperature sensor, witout set point dial

TG-R5/PT1000

TG-R5/PT1000

Baffle silencer

LD 12

LD 16

Filter MERV 9 (exhaust air)

BFT FR800

BFT FR1600

Filter MERV 13 (supply air)

BFT FR800

BFT FR1600

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Air Handling Units dimensions A

B

C

øD

E

F

G

H

FR800

68 (1722)

46 (1178)

21 (545)

12 (300)

59 (1502)

42 (1062)

10.75 (273)

17.72 (450)

FR1600

85 (2161)

54 (1378)

25 (645)

16 (400)

75 (1902)

50 (1261)

12.66 (322)

21.65 (550)

J

K

L

M

W

X

Y

Z

FR800

14.68 (373)

4.7 (119)

2.75 (70)

13.31 (338)

45 (1148)

24 (618)

38 (978)

15 (380)

FR1600

15.25 (388)

6.1 (156)

4.21 (107)

18.86 (479)

57 (1448)

32 (818)

45 (1134)

18 (440)

Dimensions are in inches (mm)

E =

2” (50)

G

=

G

2” (50)

A

G

3” (80)

ØD

C

16” (420)

J

FR800 = 2.375” (60) FR1600 = 3.125” (80)

2” (52)

28” (712)

5.25 “ (132)

G

11.25” (285)

L

11” (275)

D

CL

M

C

Supply room air Exhaust air Outdoor Air Extract air

A B C D

F

H

H

B

28” (712)

B

A

Supply air Hinged Door

K

Sliding Door

Exhaust air Extract air

Y

Indoor air

X

Screen Filter

Bag Filter

*X - required minimal space corresponds to the free area for filter service and maintenance. Z - required minimal space corresponds to the free area for filter service and maintenance when installing sliding door option.

Z

W

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Air Handling Units Performance

Topvex FR800

FR 800 supply air

extract air

thermal effectiveness

Q [cfm]

Topvex FR800

Topvex FR800

A SFP 2,

Ratings at 0” pressure differential

Sens. %

Lat. %

Tot. %

100% airflow, heating

71

66

70

75% airflow, heating

76

72

75

100% airflow, cooling

71

65

67

75% airflow, cooling

76

73

74

5

SFP

SF

2,0

A

B

B

P1

,5

C

C

Q [l/s]

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

86

78

71

62

58

54

71

70

64

84

74

64

76

70

62

77

71

64

76

69

62

70

63

55

61

53

44

Exhaust air

73

68

63

62

57

53

66

64

62

71

65

57

56

51

41

55

48

41

47

41

34

39

32

24

30

22

20

Surrounding

65

59

52

44

40

36

56

53

50

64

56

48

52

46

38

46

39

33

42

35

28

40

33

25

31

23

18

FR 1600 supply air

extract air

Topvex FR1600

Topvex FR1600

A

SF P2

,5

SF

thermal effectiveness

A

P2

SF

P1

,5

,0

B

Ratings at 0” pressure differential

Sens. %

Lat. %

Tot. %

100% airflow, heating

67

61

65

75% airflow, heating

72

67

70

100% airflow, cooling

67

57

61

75% airflow, cooling

72

66

68

B

C

C

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

87

84

73

64

57

50

67

64

69

83

83

64

78

70

61

81

73

68

80

73

65

75

67

57

68

58

49

Exhaust air

71

68

60

60

54

47

64

58

58

68

68

55

61

52

43

57

50

42

53

46

39

43

36

29

35

26

22

Surrounding

64

63

54

44

37

31

50

48

52

62

63

47

57

48

40

54

47

40

52

45

38

46

38

30

39

29

23

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Air Handling Units Operation diagram

WV

EHS

DEH Exhaust Air

PTE

WVA EPH WPSH STS

RC BAS

BAE

DO

PRF EPRH

DPS

HT

Supply Room Air

OT PTS

ERW

DS

FPS DPS

ETS

Outdoor Air

Extract Room Air

OTS

BFS

HT OT

DS

RM

WRS

BFE

UC DFSS

BAE BAS BFE BFS DEH* DO* DFSE DFSS DPS2 DS

Blower Assembly Exhaust Blower Assembly Supply Bag Filter Extract Bag Filter Supply Damper Exhaust Air, motorized Damper Outdoor Air, motorized Dirty Filter Sensor Extract Dirty Filter Sensor Supply Duct Pressure Sensor Defrost Sensor

DFSE

EPH EPRH* ERW EHS ETS FPS HT OT OTS RM

Electric Post-Heater Electric PRe-Heater Energy Recovery Wheel Exhaust Temperature Sensor Extract Temperature Sensor Frost Protection Sensor Heater Thermostat Overheating Thermostat Outdoor Temperature Sensor Rotating Motor

RC PRF* PTE1 PTS1 STS UC WPSH WRS WV* WVA*

Rotation Control PRe-Filter Pressure Transmitter Exhaust Pressure Transmitter Supply Supply Temperature Sensor Unit Control Water PoSt-Heater Wheel Rotation Sensor Water Valve Water Valve Actuator

* an additional accessory 1 an option for CAV Version 2 an option for VAV Version

Air Handling Units Installation example with Accessories

Shut-off damper EFD Pre-heater unit Air handling unit Topvex FR Fast clamp FC

Iris damper IR Fast clamp FC Silencer LD

Fast clamp FC

Iris damper IR Air handling unit Topvex FR800 or Topvex FR1600

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Air Handling Units applications The Topvex FR solution is a system application for public buildings such as schools, daycares and libraries consisting of several rooms where good indoor air quality enhances learning and concentration quite considerably. Since the indoor climate varies based on the number of people present, the load caused by occupants varies substantially as the day progresses. This normally requires complicated solutions to maintain the correct airflow and temperature for every time period in each individual room. The application is based on having the Topvex FR unit supply the rooms with preheated air at a constant supply air temperature of 61-66°F (16-19°C). The pressure in the supply duct is kept constant and the airflow to the extract fan is slave controlled so that the supply air and extract air will be kept in balance. The extract air from each room leaves via extract diffusers, doors or other openings and is then evacuated at a central location. At room level the Corrigo control system controls temperatures and airflow in response to signals from wall temperature sensors or CO2-sensors, or presence detectors. This intelligent solution holds in check a demand controlled and substantially energysaving ventilation system.

Sinus-C Extract diffuser

Sinus-C Supply diffuser

LD Silencer

Air Handling Units Topvex FR Air handling unit

EFD Shut-off damper

FC Fast clamps

IR-F Iris damper

TG-UH Temperature sensor

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Air Handling Units

Topvex TR800, TR1300, TR1800 • Airflows 300 - 2.000 cfm • Integral automatic control system for heating/cooling ventilation • Integrated control system - pre-programmed controller - BMS compatible • Constant airflow- (CAV) or duct pressure- (VAV) controlling • Low sound level

Electrical accessories

RVAZ4..24 p. 92

Topvex TR is a range of air handling units capable of providing all tempered ventilation for the building. Common applications include offices, shops, banks, daycares and similar facilities.

TG-UH p. 91

It could not be simpler! The units are supplied preprogrammed, tested and ready to install. Connect the the duct system, any external components, the power supply, and set the timer and fan speed. Installation is now complete.

E-OR p. 91

Easy to inspect To make inspections and maintenance even easier both fans and rotating heat exchangers are easy to remove. All electrical cables are fitted with quick connectors so the fans can be released quickly and easily.

Space-saving top connection With Topvex TR the ducts are connected on the top of the unit. These units take up little space and are easy to install in existing premises. Compared with roof-mounted units Topvex TR is easier to install, as you don’t need to hire cranes for lifting the unit into place or cut holes in the roof. With one unit placed inside the building, service and maintenance are also simplified.

E-Bacnet p. 91

EC fan motors Unlike motors with frequency converters, EC motors ensure excellent efficiency even at low speeds. This contributes to low operating costs. EC motors are also very quiet when running at high and low speeds. Pre-heater The pre-heater enables the system to perform in extremely cold climates to preserve performance and ensure a continuous supply of air. It does this by warming the outdoor air before it enters the energy recovery wheel. The preheater is designed to keep the temperature above the frost threshold while remaining within the temperature range of the system.

SPECIFICATION data

Voltage/Frequency

60Hz

TR800EL

TR800HW

TR1300EL

TR1300HW

TR1800EL

TR1800HW

208V

208V

208V

208V

208V

208V

Phase

~

3

3

3

3

3

3

Current (with Pre-heater)

A

16 (26.8)

5.2 (16)

25.3 (41.9)

6.1 (22.7)

33.5 (55.9)

6.2 (28.6)

Power rating, motors

W

2x505

2x505

2x769

2x769

2x1005

2x1005

Power rating, Post-heater

W

4500

-

6900

-

9000

-

Power rating, Pre-heater

W

4500

4500

6900

6900

9000

9000

MCA (w/Pre-heater)

A

18.1 (28.9)

5.2 (18.1)

29.5 (46.1)

6.2 (26.3)

39.7 (62.1)

6.3 (33.6)

MOP (w/Pre-heater)

A

30 (40)

15 (30)

50 (70)

15 (45)

70 (90)

15 (60)

Operational temperature

°F (°C)

-13/104 (-25/40)

-13/104 (-25/40)

-13/104 (-25/40)

Weight

lb (kg)

485 (220)

485 (220)

618 (280)

618 (220)

772 (350)

772 (350)

Filter, supply/extract air

MERV

13/9

13/9

13/9

13/9

13/9

13/9

Air Handling Units

| 23

Ventilation accessories

Working range Q [cfm] 200

400

600

1000

800

1200

1400

1600

1800

2000 500

1,6

Topvex TR800 Topvex TR1300 Topvex TR1800

3,0

400

3,0 2,5

2,5

1,2

Ps [Pa]

Ps [in.wg]

0 2,0

EFD + AF24 p. 89

300

2,5 2,0

2,0

0,8

ZTR/ZTV p. 93

200

1,5 2,0

0,4

100

1,5

1,5

0 200

100

0

300

400

500

600

700

800

900

1000

LD p. 88

0

Q [l/s]

FC p. 90

dimensions A

B

C

E

G

H

Topvex TR800

48 (1180)

49 (1230)

30 (750)

10 (254)

23 (590)

24 (618)

TopvexTR1300

59 (1480)

52 (1280)

34 (850)

12 (305)

29 (740)

28 (718)

A

B

C

E

F

G

H

68 (1700)

52 (1279)

40 (1000)

10 (254)

20 (508)

33 (850)

27 (868)

Topvex TR1800

BFT p. 91

Dimensions are in inches (mm)

tR800, TR1300

B

F

2

1”

1 2/3”

B

G

G A

H C

2 2/5”

G

4”

4”

E

øE

8/9”

tR 1800

*G - required minimum space corresponds to the free area for filter service and maintenance

G

A

H C

2

2/ ” 5

24 |

Air Handling Units Performance tR 800 supply air

extract air

thermal effectiveness

Topvex TR800

SFP SFP SFP

SFP

3,0

A

2,5

A

2,0

B

B

C

Ratings at 0” pressure differential

Sens. %

Lat. %

Tot. %

100% airflow, heating

72

67

70

75% airflow, heating

76

72

75

100% airflow, cooling

72

65

68

75% airflow, cooling

76

73

74

C

1,5

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

81

84

73

56

61

55

68

72

67

77

82

66

71

71

63

75

75

68

72

71

63

66

65

56

54

53

43

Exhaust air

71

72

65

51

50

45

64

65

64

70

70

57

61

58

52

55

53

48

50

48

42

43

41

34

33

32

22

Surrounding

61

66

55

39

44

37

54

58

53

60

65

48

49

47

41

47

47

40

47

46

39

43

42

33

34

33

23

tR 1300 supply air

extract air

thermal effectiveness

A

A B P SF

B

Sens. %

Lat. %

Tot. %

100% airflow, heating

72

67

70

75% airflow, heating

76

72

75

100% airflow, cooling

72

65

68

75% airflow, cooling

76

73

74

P

SF

3,0

Ratings at 0” pressure differential

C

5

2, P

SF

C

2, 0

SF

P

1,

5

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

89

80

70

65

56

51

73

68

66

85

75

65

82

73

61

81

72

60

80

72

59

77

68

54

70

62

47

Exhaust air

77

77

66

63

53

47

67

66

65

74

76

55

71

65

50

65

56

44

62

54

43

61

50

42

49

39

44

Surrounding

67

64

54

49

40

36

60

55

53

63

63

44

58

50

36

54

45

34

56

48

37

57

47

38

48

38

41

Air Handling Units Performance tR 1800 supply air

extract air

thermal effectiveness

A

B C

Ratings at 0” pressure differential

Sens. %

Lat. %

Tot. %

100% airflow, heating

72

67

70

75% airflow, heating

76

72

75

100% airflow, cooling

72

65

68

75% airflow, cooling

77

73

75

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

90

83

78

62

59

56

66

64

62

88

79

72

81

76

73

79

76

71

79

75

70

74

71

65

68

65

59

Exhaust air

71

68

66

56

53

47

63

59

56

64

63

64

65

61

57

63

60

55

60

57

51

56

53

44

48

45

35

Surrounding

67

63

59

44

42

37

53

51

48

63

60

54

59

55

53

59

56

50

57

54

48

52

49

43

45

42

35

Accessories FUNCTION

DESCRIPTION

MODEL NAME

Shut-off damper

1 for exhaust air and 1 for outdoor air

EFD

Water coil control

Valve and valve actuator

ZTV/ZTR and RVAZ4 24A

Room control

Room sensor without set point dial

TG-R5/PT1000

ACCESSORIES

Topvex TR800

Topvex TR1300

Topvex TR1800

Shut-off damper

EFD 12

EFD 16

EFD 20-10

Valve actuator

RVAZ4 24A

RVAZ4 24A

RVAZ4 24A

Valve, 2-way

ZTV 15-1.0

ZTV 15-1.0

ZTV 15-1.6

Valve, 3-way

ZTR 15-1.0

ZTR 15-1.6

ZTR 20-2.0

Room temperature sensor, witout set point dial

TG-R5/PT1000

TG-R5/PT1000

TG-R5/PT1000

Baffle silencer

LD 12

LD 16

LDR 20-10

Filter MERV 9 (exhaust air)

BFT TR800

BFT TR1300

BFT TR1800

Filter MERV 13 (supply air)

BFT TR800

BFT TR1300

BFT TR1800

| 25

26 |

Air Handling Units Installation example with Accessories

Iris damper IR

Fast clamp FC

Circular shut-off damper EFD Silencer LD Fast clamp FC Fast clamp FC

Air handling unit Topvex TR800 or Topvex TR1300

Air Handling Units Installation example with Accessories

Flexible connection DS

Silencer LDR Rectangular shut-off damper EFD

Flexible connection DS Flexible connection DS

Air handling unit Topvex TR1800

| 27

28 |

Air Handling Units Operation diagram

Exhaust Air

Outdoor Air

DO

DEH

DPS

DPS DFSE

EPRH

OT

Supply Room Air

Extract Room Air

BFS

EHS

FPS

WV

STS

WPSH HT DS

WVA

EPSH OT

HT

RC

OTS

UC

BAE BFE

PTE

ETS ERW

BAS DFSS

BAE BAS BFE BFS CC* DEH* DO* DFSE DFSS DPS2

Blower Assembly Exhaust Blower Assembly Supply Bag Filter Extract Bag Filter Supply Cooling Coil Damper Exhaust Air, motorized Damper Outdoor Air, motorized Dirty Filter Sensor Extract Dirty Filter Sensor Supply Duct Pressure Sensor

RM

DS EPRH EPSH ERW EHS ETS FPS HT OT OTS

WRS

Defrost Sensor Electric PRe-Heater Electric PoSt-Heater Energy Recovery Wheel Exhaust Temperature Sensor Extract Temperature Sensor Frost Protection Sensor Heater Thermostat Overheating Thermostat Outdoor Temperature Sensor

PTS

RC RM PTE1 PTS1 STS UC WPSH WRS WV* WVA*

Rotation Control Rotating Motor Pressure Transmitter Exhaust Pressure Transmitter Supply Supply Temperature Sensor Unit Control Water PoSt-Heater Wheel Rotation Sensor Water Valve Water Valve Actuator

* an additional accessory 1 an option for CAV Version 2 an option for VAV Version

Air Handling Units

With the integrated control system it is possible to control airflow, duct pressure, temperatures, heating/cooling recovery and operating times. The functions and functionality in Topvex air handling units give you all that is needed to create an indoor environment with the highest comfort and to the lowest operating costs. Save the environment by using Topvex units from Systemair!

| 29

30 |

Air Handling Units Control equipment Each Topvex unit comes standard with a remote mounted control and 33 ft (10 m) of cable. Control panel SCP can be placed up to 3280 ft (1000 m) away using special repeaters E-0R. Desired static pressure, airflow or temperature of supply air can be set and held. 24 hour programmable function, wheel sensor and other alarms are standard.

allows central supervision of many units, which ensures early detection of incorrect operation (i.e. dirty filters).

Pre-configurated , menu-based control system available with Exoline, Modbus, LON, TCP/IP or BACnet* communications. A digital CO2/humidity sensor or movement detector can be used to control airflow according to demand using step-less fan speed settings. Sum alarm output

* Communications using BACnet requires the use of a separate protocol gateway

CONTROL EQUIPMENT

E28S Settings

Control panel SCP

Separate with 32 ft (10 m) cable

Standard

Repeater E0-R

For installations with > 32 ft (10m) between the unit and the panel

Optional

Software

E-Tool

Optional

Temperature control

Exhaust air

Standard

Supply air

Programmable

Outdoor air temperature compensation supply air

Programmable

Room air control

Programmable

Outdoor air temperature-dependent exchange between supply air/exhaust air or supply air/room air control

Programmable

Control of airflow

7-day timer with two separate operational periods Air volume control, CAV Constant duct pressure, VAV

Standard Standard Choose on order

Airflow compensated for outdoor air temperature

Standard

Rotating

Standard

Pre-heater

Electical

Heater

Hot water

Choose on order

Electrical

Choose on order

Free cooling

Programmable

Cool recycling Pump control Heat exchanger efficiency

Optional

Programmable Variable, CO2 sensor with 0...10V DC signal

Programmable

Heating, 24V AC output signal

Programmable

Cooling, 24V AC output signal

Programmable

Requires duct-mounted extract air temperature sensor

Programmable

Extended operation

Standard

7-day program

Alternates between operating modes normal, reduced or off.

Standard

Damper control

Fresh air/Extract air

Standard

Alarm

Alarm notification

Standard

High and low priority

Standard

Buzzer alarm (24VAC output signal)

Standard

Communication

Filter alarm triggered by pressure differential

Standard

Exoline, Modbus via RS 485

Standard

LON, Exoline via TCP/IP

Optional

Air Handling Units Control Unit functions E28S Menu language

English, French, Spanish and another languages

Temperature control

Supply air Supply air with compensation for outdoor air temperature Extract air (cascade) Room air control (cascade) Outdoor air temperature-dependent exchange between room air control and supply air control Outdoor air temperature-dependent exchange between extract air control and supply air control

Fan speed control

Constant air volume control, CAV Constant duct pressure control, VAV Airflow/duct pressure compensated for outdoor air temperature

Heat exchanger control

Rotating heat exchanger (variable)

Heat control

Water coil (0...10V control signal) Electric pre-heating and post-heating (0...10V control signal)

Cold water cooling

Control of cold water cooling (0...10V control signal)

DX-cooling

DX cooling control (up to 3-stage binary control)

Cooling energy recovery

Automatically recovers the cooled indoor air to cool the warmer outdoor air

Free cooling

Free cooling is used to save energy by using the cold outdoor air to cool down the building during the night

Demand-controlled ventilation

For applications with varying loads, the fan speed and mixing damper can be controlled by the air quality, measured using a CO2sensor. It is also possible to use a digital input for extended/boosted operation via an external signal from an external timer, presence detector or similar sensors with a voltage-free contact

Extended operation

The units have a digital input for extended/boosted operation. This function is activated by an external signal from a button or timer. The function can also be activated via the control panel. Extended operation can be set to run for 0 to 240 minutes

Yearly program

A yearly clock function means you can store a 7-day program with holiday periods. Each day has up to two individual operational periods for normal and reduced speed. Duct for digital timer, e.g. door locks, lighting, etc.

Damper control

24V output signal controlling one or two shut-off dampers

Alarm

Alarm notification in clear text Alarm prioritisation. Alarms can be assigned different priorities: A, B and C alarms or inactive Buzzer alarm output signal (24V) Fire alarm input (voltage-free contact). Different fan modes in the event of a fire

Communication

A repeater (E0R, accessory) is required when the cable between the unit and control panel is longer than 32 ft (10 m). Repeater E-0R can control up to 6 air handling units Standard – Exoline, ModBus via RS 485, TCP/IP, built-in Web Option – LON

E-Tool software

PC-based software

| 31

32 |

Air Handling Units APPLICATION The indoor climate in airports makes it necessary to satisfy special needs. Since waiting passengers spend time in departure lounges, adequate ventilation is required in such places. As for air volume, the needs vary at different times of the day. However, in the majority of cases, peak ventilation is needed at morning and evening times. Most airport buildings have considerable floor area and high ceilings. The Topvex TR unit, AJD Jet Nozzles and CRSP Swirl diffusers meet these demands effectively. The Topvex TR contains an energy recovery wheel and builtin control system. The duct system is equipped with IR Iris dampers to maintain the balance between supply and exhaust air volumes. The control system can be programmed various ways to meet energy-savings requirements depending on occupant traffic. Diffusers for air distribution are designed for hot and cold air.

EFD Shut-off dampers

Topvex TR Air handling unit

AJD Supply jet diffusers

Air Handling Units

CRSP Swirl Exhaust Diffusers

Air Distribution Columns

| 33

34 |

Air Handling Units

ERV RT-EC

Electrical accessories

• Airflows up to 4.600 cfm • Adsorption type TOTAL energy recovery wheel • Double wall cabinet • Pull-pull configuration • EC motors with integrated protection • Economizer function

Timer TORK p. 91

These units are exclusively engineered to meet today’s latest energy requirements by using the most efficient impeller design and a state of the art rotating heat exchanger. All units are equipped with a simple pre-configured control system compatible with most building automation systems. Roof curbs are also available to offer a proper fit and seal to simplify the installation. Double wall contruction with 20 gauge galvanized steel. Insulated with 1” (25 mm) fiberglass for condensation control. The rotor matrix is made of a corrosion resistant aluminum alloy that is composed of alternating corrugated and flat, continuously wound layers of uniform widths that guarantees laminar air flow, and low static pressure loss. The rotor wheel is reinforced with spokes, welded at the hub and perimeter to prevent any uneven run out during normal operations. All corrugated surfaces are coated with a thin non-migrating adsorbent layer. Fans EC-motors with backward inclined impellers offer superior energy performance. Pre-heater The pre-heater enables the system to perform in extremely cold climates to preserve performance and ensure a continuous supply of air. It does this by warming the outdoor air before it enters the energy recovery wheel. The preheater is designed to keep the temperature above the frost threshold while remaining within the temperature range of the system. SPECIFICATION data

Voltage/Frequency

60Hz

ERV 1300 RT-EC

ERV 3200 RT-EC

ERV 4600 RT-EC

240V

208-230/460V

208-230/460V

Phase

~

1

3

3

Current

A

6.1

7.1/4.1

17.1/8.8

Power rating, motors

W

2x485

2x1000

2x2700

2, 4, 6 or 8

5, 10, 15, 20 or 25

5, 10, 15, 20 or 25

Power rating, Pre-heater

kW

MCA (without pre-heater)

A

6.5

7.2/4.2

18.9/9.5

MOP (without pre-heater)

A

15

15/15

25/15

-4...104 (-25...40)

-4...122 (-20...50)

-4...122 (-20...50)

443 (201)

986 (447)

1028 (466)

11/7

11/7

11/7

Operational temperature Weight Filter, supply/extract air

°F (°C) lbs (kg) MERV

Air Handling Units Working range

Ventilation accessories

2,0

0

1000

2000

3000

5000

4000

ERV 1300 RT-EC ERV 3200 RT-EC ERV 4600 RT-EC

2,5 2,5

1,5

2,5

500 400

Ps [Pa]

Ps [in.wg]

Q [cfm]

Roof curb p. 92

2,0 2,0

1,0

300

2,0 1,5

200

1,5 1,5

0,5

100

0

Pleated filter p. 92

0 0

500

1000

2000

1500

2500 Q [l/s]

dimensions A

B

C

D

E

F

G

H

I

J

ERV 1300

70 (1763)

47 (1189)

50 (1271)

34 ( 859)

41 (1028)

7 (178)

71/4 (184)

231/2 (597)

243/4 (630)

241/4 (692)

ERV 3200

95 (2417)

67 (1695)

68 (1727)

54 (1336)

60 (1526)

10 (254)

10 (254)

391/2 (1003)

45 (1134)

38 (967)

ERV 4600

95 (2417)

67 (1695)

68 (1727)

54 (1336)

60 (1526)

10 (254)

10 (254)

39 /2 (1003)

45 (1134)

38 (967)

Dimensions are in inches (mm)

1

| 35

36 |

Air Handling Units Performance ERV 1300 RT-EC thermal effectiveness

ERV 1300

Ratings at 0” pressure differencial

Sens. %

Lat. %

Tot. %

100% airflow, heating

73

70

72

75% airflow, heating

78

76

77

100% airflow, cooling

74

69

71

75% airflow, cooling

78

76

77

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

81

84

73

56

61

55

68

72

67

77

82

66

71

71

63

75

75

68

72

71

63

66

65

56

54

53

43

Exhaust air

71

72

65

51

50

45

64

65

64

70

70

57

61

58

52

55

53

48

50

48

42

43

41

34

33

32

22

Surrounding

61

66

55

39

44

37

54

58

53

60

65

48

49

47

41

47

47

40

47

46

39

43

42

33

34

33

23

ERV 3200 RT-EC thermal effectiveness

ERV 3200

Ratings at 0” pressure differencial

Sens. %

Lat. %

Tot. %

100% airflow, heating

76

76

75

75% airflow, heating

80

78

79

100% airflow, cooling

76

73

74

75% airflow, cooling

80

80

80

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

89

80

70

65

56

51

73

68

66

85

75

65

82

73

61

81

72

60

80

72

59

77

68

54

70

62

47

Exhaust air

77

77

66

63

53

47

67

66

65

74

76

55

71

65

50

65

56

44

62

54

43

61

50

42

49

39

44

Surrounding

67

64

54

49

40

36

60

55

53

63

63

44

58

50

36

54

45

34

56

48

37

57

47

38

48

38

41

Air Handling Units Performance ERV 4600 RT-EC thermal effectiveness

ERV 4600

Ratings at 0” pressure differencial

Sens. %

Lat. %

Tot. %

100% airflow, heating

70

65

68

75% airflow, heating

75

71

74

100% airflow, cooling

70

63

66

75% airflow, cooling

75

71

73

octave band (mid-frequency, Hz) Tot

63

125

250

500

1000

2000

4000

8000

LwA dB(A)

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Supply air

90

83

78

62

59

56

66

64

62

88

79

72

81

76

73

79

76

71

79

75

70

74

71

65

68

65

59

Exhaust air

71

68

66

56

53

47

63

59

56

64

63

64

65

61

57

63

60

55

60

57

51

56

53

44

48

45

35

Surrounding

67

63

59

44

42

37

53

51

48

63

60

54

59

55

53

59

56

50

57

54

48

52

49

43

45

42

35

| 37

38 |

Air Handling Units applications One of the most significant indicators of a sports facility’s quality is the indoor climate. The air quality is directly related to the well-being of the people doing sport activities. Performance always improves if comfort and air quality are maintained properly. The other issue for facilities operated all day long is the optimization of energy consumption. In this example, the gymnasium rooms are ventilated with ERV RT-EC Roof Top units as required, connected to a centrally located cooling system. The unit supplies the fresh air along ducts and supply IKD diffusers and extracts used air through NOVA-R wall grills. EC-motors with integrated control, together with a total energy recovery wheel, optimize unit operation and maintain the room climate for every period of the day.

IKD Circular ceiling diffusers

Air Handling Units

HVAC System

ERV RT-EC Roof Top unit

| 39

40 |

Air Handling Units Operation diagram

DO

PFS

EPH ESL ESH

Outdoor Air Intake

RS

WRS BAS

DFSS

Exhaust Air Hood

OT

AS

HT ERW

UC

BAE DS

RM

DEH

PFE

Extract Room Air

AS* BAE BAS DEH* DO* DFSS

Airflow Sensor Blower Assembly Exhaust Blower Assembly Supply Damper Exhaust Air, motorized Damper Outdoor Air, motorized Dirty Filter Sensor Supply

DS* EPH* ERW ESH ESL HT*

Defrost Sensor Electric Pre-Heater Energy Recovery Wheel Economizer Sensor High Limit Economizer Sensor Low Limit Heater Thermostat

OT* RM RS PFE PFS UC WRS

Supply Room Air

Overheating Thermostat Rotating Motor Rotation Sensor Pleated Filter Extract Pleated Filter Supply Unit Control Wheel Rotating Sensor

* an additional accessory

| 41

Fans

42 |

Fans

MUB

Electrical accessories

• Airflows up to 6.400 cfm • High capacity fan • 100% controllable fan • Flexible solution • Safe operation • Low noise emissions

MTP 10 p. 91

The MUB commercial inline fan is designed to be an efficient, flexible and versatile supply or exhaust ventilation system. MUB fans use EC-motors with integral electronic control via 0 10V contact. This contact can be controlled through the built-in potentiometr in the fan’s electrical box or through external MTP10 speed control unit. It allows them to run in the optimal operating range to create the desired airflow thus less energy is needed to operate the fan. Flexible solution The flexibility offered by the removable panels allows the MUB’s airflow direction to be selected on site. Straight through or 90 degree airflow paths are possible. Any outlet side can be chosen.

Demand-oriented

Built-in protection The motor is integrated with electronic protection to ensure safe operation. Reduced energy: more than just air

All models are equipped with impellers with backward curved aluminum blades with reduced noise emissions. The casing consists of an aluminum frame with fiberglass reinforced nylon corners; highly shock-resistant.

The double skin panels are manufactured from galvanized steel with 7/9 inches (20 mm) polyolefin insulation for excellent sound reduction and thermal properties. The insulated space between the panels prevents condensation on the screws.

The fans’ optimized workload will reduce wear and tear, giving the ventilation system a longer lifespan and reducing maintenance costs.

SPECIFICATION data

Voltage/Frequency

50/60Hz

MUB 16-120-1

MUB 16-240-1

MUB 20-120-1

MUB 20-240-1

MUB 20-230-3

120

240

120

240

230

Nominal voltage range

V

100...130

200...270

100...130

200...277

200...240

Phase

~

1

1

1

1

3

1439 (679)

1588 (750)

2231 (1053)

2735 (1291)

2773 (1309)

2190

2480

1324

1708

1762

Maximum airflow (90°) Rpm

cfm (l/s) min

-1

Power rating, motors

W

350

505

380

775

770

Current

A

4.2

2.9

4.5

3.5

2.6

MCA

A

5.3

3.7

5.7

4.4

3.3

MOP

A

15

15

15

15

15

-13...140 (-25...60)

-13...104 (-25...40)

-13...104 (-25...40)

-13...104 (-25...40)

-13...104 (-25...60)

lbs (kg)

60 (27)

60 (27)

95 (43)

95 (43)

95 (43)

-

B / IP44

B / IP44

B / IP54

B / IP54

B / IP54

3

3

3

1

2

Operational temperature Weight Insulation / Enclosure class Wiring diagram, page 95

°F (°C)

Fans Working range

1

MUB 16-120-1

3

MUB 20-120-1

2

MUB 16-240-1

4

MUB 20-240-1

5

MUB 20-230-3 MUB 20-460-3

6

MUB 24-230-3 MUB 24-460-3

7

MUB 24H-230-3 MUB 24H-460-3

1

5

3 2

7

6

4

dimensions A

B

C

MUB 16

195/8 (500)

161/2 (420)

23/8 (60)

MUB 20

235/8 (600)

201/2 (520)

23/8 (60)

MUB 24

275/8 (700)

241/2 (620)

23/8 (60)

Dimensions are in inches (mm)

Voltage/Frequency

50/60Hz

MUB 20-460-3

MUB 24-230-3

MUB 24-460-3

MUB 24H-230-3

MUB 24H-460-3

460

230

460

230

460

Nominal voltage range

V

380...480

200...240

380...480

200...240

380...480

Phase

~

3

3

3

3

3

2773 (1309)

3986 (1881)

3986 (1881)

5974 (2819)

5974 (2819)

1762

1556

1556

1711

1711

Maximum airflow (90°) Rpm

cfm (l/s) min-1

Power rating, motors

W

830

750

1000

2800

2700

Current

A

1.6

2.9

1.85

8.5

4.3

MCA

A

2.0

3.7

2.4

10.7

5.4

MOP

A

15

15

15

20

15

-13...104 (-25...40)

-25...122 (-25...50)

-25...140 (-25...60)

-13...122 (-25...50)

-13...140 (-25...60)

95 (43)

128 (58)

128 (58)

150 (68)

150 (68)

B / IP44

B / IP54

B / IP54

B / IP54

B / IP54

2

2

2

2

2

Operational temperature Weight Insulation / Enclosure class Wiring diagram, page 94

°F (°C) lbs (kg) -

| 43

44 |

Fans Performance MUB 16-120-1

120

120

70

70

82

dB(A)

LwA Inlet

Tot

82

81

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

41

60

72

77

77

72

71

67

Measurement point: 1407 cfm, 0 in.wg (664 l/s; 0 Pa)

LwA Inlet

Tot

81

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

48

61

71

76

77

72

71

66

Measurement point: 1407 cfm, 0 in.wg (664 l/s; 0 Pa)

MUB 16-240-1

4

4

74 75

84

86

dB(A)

LwA Inlet

Tot

86

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

49

62

73

79

81

76

80

67

Measurement point: 1555 cfm, 0 in.wg (734 l/s; 0 Pa)

LwA Inlet

Tot

85

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

49

63

72

78

79

77

78

69

Measurement point: 1556 cfm, 0 in.wg (734 l/s; 0 Pa)

Fans Performance MUB 20-120-1

120

120

67

68

75

77

dB(A)

LwA Inlet

Tot

75

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

48

61

66

69

66

65

63

71

Measurement point: 2084 cfm, 0 in.wg (984 l/s; 0 Pa)

LwA Inlet

Tot

77

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

48

63

68

70

68

68

65

72

Measurement point: 2230 cfm, 0 in.wg (1052 l/s; 0 Pa)

MUB 20-240-1

4

4

79

76

86

dB(A)

LwA Inlet

Tot

86

84

dB(A)

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

51

68

74

77

77

73

79

81

Measurement point: 2506 cfm, 0 in.wg (1183 l/s; 0 Pa)

LwA Inlet

Tot

84

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

51

67

73

76

75

76

76

79

Measurement point: 2735 cfm, 0 in.wg (1291 l/s; 0 Pa)

| 45

46 |

Fans Performance MUB 20-230-3

81

81

86

86

dB(A)

LwA Inlet

Tot

86

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

68

76

78

79

77

76

77

79

Measurement point: 2552 cfm, 0 in.wg (1204 l/s; 0 Pa)

LwA Inlet

Tot

86

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

53

68

74

78

77

78

78

81

Measurement point: 2773 cfm, 0 in.wg (1309 l/s; 0 Pa)

MUB 20-460-3

81

81

86

86

dB(A)

LwA Inlet

Tot

86

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

68

76

78

79

77

76

77

79

Measurement point: 2552 cfm, 0 in.wg (1204 l/s; 0 Pa)

LwA Inlet

Tot

86

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

53

68

74

78

77

78

78

81

Measurement point: 2773 cfm, 0 in.wg (1309 l/s; 0 Pa)

Fans Performance MUB 24-230-3

80

77

85

dB(A)

LwA Inlet

Tot

85

87

dB(A)

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

49

68

72

76

71

72

83

63

LwA Inlet

Tot

87

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

50

68

74

78

74

75

86

68

Measurement point: 3654 cfm, 0 in.wg (1724 l/s; 0 Pa)

Measurement point: 3651 cfm, 0 in.wg (1723 l/s; 0 Pa)

MUB 24-460-3

80

77

85

dB(A)

LwA Inlet

Tot

85

87

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

49

68

72

76

71

72

83

63

Measurement point: 3651 cfm, 0 in.wg (1723 l/s; 0 Pa)

LwA Inlet

Tot

87

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

50

68

74

78

74

75

86

68

Measurement point: 3654 cfm, 0 in.wg (1724 l/s; 0 Pa)

| 47

48 |

Fans Performance MUB 24H-230-3

84

86

88

89

dB(A)

LwA Inlet

Tot

88

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

57

71

79

80

80

80

83

70

Measurement point: 5280 cfm, 0 in.wg (2492 l/s; 0 Pa)

LwA Inlet

Tot

90

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

58

71

82

83

82

83

84

75

Measurement point: 5974 cfm, 0 in.wg (2819 l/s; 0 Pa)

MUB 24H-460-3

84

86

88

89

dB(A)

LwA Inlet

Tot

88

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

57

71

79

80

80

80

83

70

Measurement point: 5280 cfm, 0 in.wg (2492 l/s; 0 Pa)

LwA Inlet

Tot

90

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

58

71

82

83

82

83

84

75

Measurement point: 5974 cfm, 0 in.wg (2819 l/s; 0 Pa)

Fans Installation example

Exhaust to the rear

Change the exhaust direction

Exhaust to the side

Change the exhaust simply by changing the positions of the side panels

| 49

50 |

Fans

K EC

Electrical accessories

• EC-motors, high level of efficiency • 100% speed controllable • Speed regulator included • Integrated motor protection • Supplied with mounting bracket

MTP 10 p. 91

The special feature of EC fans is their energy-saving potential not only at full load, but especially at partial-load. When operating at partial-load, the energy used is much lower than with an asynchronous motor of equivalent output. Reduced energy usage guarantees a drop in operating costs. The K EC series is designed for installation in ducts. All the K-fans have minimum 1” (25 mm) long spigot connections. The fans have backward-curved blades and external rotor motors (EC). The FK mounting clamp facilitates easy installation and removal, and prevents the transfer of vibration to the duct. The fans are delivered with a pre-wired potentiometer (0-10V) that allows you to easily find the desired working point. Systemair Mfg. Inc. certifies that the models shown herein are licensed to bear the AMCA Seal. The ratings are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Motor protection is integrated in the electronics of the motor. The casing is manufactured from galvanised sheet steel with the seams folded to give the fan a close to airtight casing. This allows for the possibility of outdoor mounting and wet room applications.

SPECIFICATION data

Voltage/Frequency

50/60Hz

K 6M EC

K 8 EC

K 10 EC

K 12 EC

K 12XL EC

120

120

120

120

120

Nominal voltage range

V

100...130

100...130

100...130

100...130

100...130

Phase

~

1

1

1

1

1

362 (171)

428 (202)

513 (242)

634 (299)

805 (380)

2486

2598

2444

2675

2520

Maximum airflow Rpm

cfm (l/s) min-1

Power rating, motors

W

76

70

88

129

162

Current

A

1,16

1,07

1,30

1,77

2,17

MCA

A

1.25

1.25

1.63

2.50

2.50

MOP

A

15

15

15

15

15

-13...140 (-25...60)

-13...140 (-25...60)

-13...104 (-25...40)

-13...104 (-25...40)

-13...131 (-25...55)

6.6 (3)

7.3 (3.3)

7.7 (3.5)

13.2 (6)

16 (7.2)

IP44 / B

IP44 / B

IP44 / B

IP44 / B

IP44 / B

4

4

4

4

4

Operational temperature Weight Insulation / Enclosure class Wiring diagram, page 95

°F (°C) lbs (kg) -

Fans Ventilation accessories

Working range

FC p. 90

LD p. 88

RSK p. 88

dimensions IR p. 83

A

B

C

D

E

F

K 6M EC

6 (152)

2 (51)

131/8 (333)

65/8 (168)

1 (25)

1 (25)

K 8 EC

8 (203)

2 (51)

133/8 (340)

6 (152)

11/8 (29)

11/8 (29)

K 10 EC

10 (254)

2 (51)

133/8 (340)

411/16 (119)

11/8 (29)

1 (25)

K 12 EC

12 (305)

2 (51)

16 (406)

8 /4 (210)

1 /16 (27)

13/16 (30)

K 12XL EC

12 (305)

2 (51)

16 (406)

81/4 (210)

11/16 (27)

13/16 (30)

1

1

Dimensions are in inches (mm)

øC øA

E

D

3 3/4”

F

2”

øA

Performance certified is for installation type D – Ducted inlet, Ducted outlet. Speed (RPM) shown is nominal. Performance based on actual speed of test. Performance ratings do not include the effect of appurtenance (accessories). The AMCA Certified Ratings Seal applies to air performance ratings only.

| 51

52 |

Fans Performance K 6M EC

dB(A)

K 8 EC

Tot

dB(A)

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

Tot

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

LwA Supply air

71

54

64

64

62

64

62

55

44

LwA Supply air

71

54

64

64

62

64

62

55

44

LwA Exhaust air

63

53

62

57

41

41

34

24

20

LwA Exhaust air

63

53

62

57

41

41

34

24

20

LwA Surrounding

52

36

50

48

38

33

28

25

18

LwA Surrounding

52

36

50

48

38

33

28

25

18

Measurement point: 229 cfm, 1.10 in.wg (108 l/s; 274 Pa)

Measurement point: 153 cfm, 1.47 in.wg (72 l/s; 367 Pa)

K 10 EC

dB(A)

K 12 EC

Tot

dB(A)

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

Tot

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

LwA Supply air

71

54

64

64

62

64

62

55

44

LwA Supply air

71

54

64

64

62

64

62

55

44

LwA Exhaust air

63

53

62

57

41

41

34

24

20

LwA Exhaust air

63

53

62

57

41

41

34

24

20

LwA Surrounding

52

36

50

48

38

33

28

25

18

LwA Surrounding

52

36

50

48

38

33

28

25

18

Measurement point: 252 cfm, 1.44 in.wg (119 l/s; 359 Pa)

Measurement point: 384 cfm, 1.28 in.wg (181 l/s; 319 Pa)

Performance certified is for installation type D – Ducted inlet, Ducted outlet. Speed (RPM) shown is nominal. Performance based on actual speed of test. Performance ratings do not include the effect of appurtenance (accessories). The AMCA Certified Ratings Seal applies to air performance ratings only.

Fans Performance K 12XL EC

dB(A)

Tot

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

LwA Supply air

71

54

64

64

62

64

62

55

44

LwA Exhaust air

63

53

62

57

41

41

34

24

20

LwA Surrounding

52

36

50

48

38

33

28

25

18

Measurement point: 481 cfm, 2.38 in.wg (227 l/s; 591 Pa)

Performance certified is for installation type D – Ducted inlet, Ducted outlet. Speed (RPM) shown is nominal. Performance based on actual speed of test. Performance ratings do not include the effect of appurtenance (accessories). The AMCA Certified Ratings Seal applies to air performance ratings only.

| 53

54 |

Fans Installation example with Accessories

Intake grill IGK

Circular duct fan K EC

Fast clamps FC Fast clamps FC

Supply nozzle diffuser Sinus-F Circular silencer LD

Iris damper IR

Supply diffuser Elegant

Fans

All of our products are based on intelligent EC technology. They use integral electronic controls which eliminate slip losses in the motor and ensure that the motor always runs at optimal load. This guarantees that the energy usage is considerably lower compared with other motor types.

| 55

56 |

Fans

DVC P/S

Electrical accessories

• Airflows up to 7,000 cfm • High capacity fan • 100% controllable motor • Low noise emissions • Safe operation • Day/night control mode

MTP 10 p. 91

The DVC P/S roof fans are driven by EC-external rotor motors with high efficiency. The input voltage for single phase units can vary between 200 and 277V, for three phase units between 380 and 480V. All motors are suitable for 60Hz and are suspended on effective vibration dampers. The DVC-P versions have integrated pressure sensors and the electronics are programmed for a constant pressure operation. Motor protection is integrated in the electronics of the motor; no additional external motor protection device is needed. Energy saving made easy

Systemair Mfg. Inc. certifies that the DVC Series shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and Publication 311 if sound is also certified and comply with the requirements of the AMCA Certified Ratings Program.

Looking at today’s control systems, it quickly becomes clear that the use of conventional speed controllers using variable frequency drives can have problems both large and small. For applications that are noise sensitive, speed control at low speed is almost impossible when using variable frequency systems. When using frequency inverters, missing signal information can cause problems with motors. Often the installation of sine filters and shielded cables, necessary for a trouble-free operation of the motor when used with a frequency inverter, is not given consideration even at the design stage.

SPECIFICATION data

Voltage/Frequency

60Hz

DVC 10-P/S -230-1

DVC 14-P/S -230-1

DVC 18-P/S-230-1

DVC 22-P/S-460-3

DVC 30-P/S-460-3

DVC 30H-P/S-460-3

230

230

230

460

460

460

Nominal voltage range

V

200..277

200...277

200...277

380...480

380...480

380...480

Phase

~

1

1

1

3

3

3

542 (256)

1161 (548)

2265 (1069)

4236 (2000)

5829 (2751)

6963 (3286)

3427

1675

1324

1339

1360

1209

Maximum airflow Rpm

cfm (l/s) min-1

Power rating, motors

W

173

178

385

1119

1863

2502

Current

A

1.17

1.18

2.3

1.66

2.88

3.72

MCA

A

1.38

1.56

3.1

2.13

4.25

5.13

MOP

A

15

15

15

15

15

15

-13...140 (-25...60)

-13...140 (-25...60)

-13...140 (-25...60)

-13...140 (-25...60)

-13...140 (-25...60)

-13...140 (-25...60)

20 (9)

29 (13)

46 (21)

108 (49)

159 (72)

179 (80)

B / IP44

B / IP44

B / IP54

B / IP54

F / IP54

F / IP54

5

5

5

6

6

6

Operational temperature Weight Insulation / Enclosure class Wiring diagram, page 96

°F (°C) lbs (kg) -

Fans Working range

Q [l/s]

Q [l/s]

900

0

3.0

2.0

1000

2000

3000

5

DVC 22-P/S DVC 30-P/S

6

DVC 30H-P/S

4

3.0

2.0

12588, 12587, 12586

600

Ps [in.wg]

300

12585, 12583, 12584

Ps [in.wg]

0

Ventilation accessories

FDS p. 90

6 5

3

4

1

1.0

ASC p. 90

1.0 2

0

0

500

1000

1500

2000

0

2500

0

1200

2400

3600

4800

6000

7200

8400

LD p. 88

Q [cfm]

Q [cfm]

dimensions A



IR p. 83

F G J

C

G

H

B

øD ø I(4x)

øD 

E

A

B

C

øD

E

F

G

H

øI

J

DVC 10-P/S-230-1

14 /2 (370)

1 /5 (30)

6 /3 (170)

8 /3 (213)

13 /5 (335)

9 /3 (245)

4 /8 (105)

M6(6x)

10(4x)

M20x1,5

DVC 14-P/S-230-1

22 (560)

11/5 (30)

13 (330)

111/5 (285)

171/8 (435)

13 (330)

53/4 (146)

M6(6x)

10(4x)

M20x1,5

DVC 18-P/S-230-1

141/3 (720)

11/5 (30)

151/3 (390)

171/4 (438)

233/7 (595)

173/4 (450)

77/8 (200)

M6(6x)

12(4x)

M20x1,5

DVC 22-P/S-460-3

352/5 (900)

11/5 (30)

181/3 (465)

171/4 (438)

261/5 (665)

21 (535)

91/3 (237)

M6(6x)

12(4x)

M20x1,5

DVC 30-P/S-460-3

45 /4 (1150) 1 /5 (30)

22 (560)

23 /5 (605)

37 (939)

29 /2 (750)

11 /2 (293)

M6(6x)

12(4x)

M20x1,5

DVC 30H-P/S-460-3

451/4 (1150) 11/5 (30)

22 (560)

234/5 (605)

37 (939)

291/2 (750)

111/2 (293)

M6(6x)

12(4x)

M20x1,5

1

1

1

1

2

1

4

1

2

1

1

1

Dimensions are in inches (mm)

Performance Certified is for Installation Type A: free inlet, free outlet. Performance ratings include the effects of an outlet bird screen. Speed (RPM) shown is nominal. Performance is based on actual speed of test. The sound power level ratings shown are in decibels, referred to 10-12 watts calculated per AMCA Standard 301. The A-weighted sound ratings shown have been calculated per AMCA Standard 301. Values shown are for LWiA sound power levels for Installation Type A: free inlet, free outlet. Ratings do not include the effects of duct end correction. All values shown are calculated at 0.25” (static pressure in inches W.G.). The AMCA Certified Ratings Seal does not apply to SFP performance data.

| 57

Fans Performance DVC 10-P/S-230-1

DVC 14-P/S-230-1 Q [l/s]

DVC 14-P/S-230-1

SF P SF 1,4 P 1,2

P

SF

SFP 1,2

1,0

SFP 1,0

400

2,0

1,4

SFP

200

12583, 12589

DVC 10-P/S-230-1

3,0

2,0

Q [l/s] 0

200

Ps [in.wg]

100

12585, 12588

Ps [in.wg]

0

0

1,

,8

P0

SF

SFP

0,6

SFP 0,

8

1,0

SF

P0

,6

74 84 55

65

0

100

200

0 300

400

500

600

0

200

400

600

800

1000

200 100 0

200 100

0

100

200

300

400

500

0

600

0

200

400

600

800

1000

Q [cfm]

Tot

dB(A)

125

250

500

1k

2k

4k

8k

50

59

71

79

78

77

74

69

Measurement point: 515 cfm, 0.25 in.wg (243 l/s, 62 Pa)

LwA Inlet

74

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

43

60

70

69

64

66

59

61

Measurement point: 943 cfm, 0.25 in.wg (445 l/s, 62 Pa)

DVC 18-P/S-230-1

DVC 22-P/S-460-3 1000

1500

2000

DVC 22-P/S-460-3 2 1,

2,0

P SF

SF P SF 1,4 P SF 1,2 P 1, 0

500

P

12584, 12590

DVC 18-P/S-230-1 2,0

FP

Q [l/s] 0

SF

900

0

600

1,

300

Q [l/s]

Ps [in.wg]

0

Ps [in.wg]

Tot

1,4

84

Frequency bands [Hz] 63

P

LwA Inlet

1200

Q [cfm]

SF

dB(A)

1200

Q [cfm] [W]

[W]

Q [cfm]

8

SFP

12585, 12591

0

0,8

0,

S

,6

P0

SF

SFP 0,6

1,0 1,0

79 84

63

0

0

400

800

1200

1600

2000

0

2400

Q [cfm]

200

0

LwA Inlet

0

800

1600

2400

3200

4000

1200

600

0

400

800

1200

1600

2000

0

2400

Q [cfm]

dB(A)

71

Q [cfm]

400

[W]

[W]

58 |

Tot

79

800

1600

2400

3200

4000

Q [cfm]

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

46

65

75

71

65

65

71

69

Measurement point: 2100 cfm, 0.25 in.wg (991 l/s, 62 Pa)

0

LwA Inlet

Tot

84

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

51

76

80

76

71

72

77

75

Measurement point: 4060 cfm, 0.25 in.wg (1916 l/s, 62 Pa)

Performance Certified is for Installation Type A: free inlet, free outlet. Performance ratings include the effects of an outlet bird screen. Speed (RPM) shown is nominal. Performance is based on actual speed of test. The sound power level ratings shown are in decibels, referred to 10-12 watts calculated per AMCA Standard 301. The A-weighted sound ratings shown have been calculated per AMCA Standard 301. Values shown are for LWiA sound power levels for Installation Type A: free inlet, free outlet. Ratings do not include the effects of duct end correction. All values shown are calculated at 0.25” (static pressure in inches W.G.). The AMCA Certified Ratings Seal does not apply to SFP performance data.

Fans Performance DVC 30-P/S-460-3

DVC 30H-P/S-460-3 Q [l/s] 1500

2000

0

12586, 12592

DVC 30-P/S-460-3 3,0

P SF

,2

P1

SF

Q [l/s]

2500

1000

2000

DVC 30H-P/S-460-3

3,0 P SF

4

1,

,2

P1

SF

SFP 1,0

SFP 1,0

2,0

2,0

SFP

SFP 0,8

SFP

3000

SF

0,8

P0

0,6

,6

1,0

1,0

88

87

0

67

0

1000

2000

0

3000

4000

5000

6000

66

0

1200

2400

3600

4800

6000

[W ]

[W]

2000

3000

1500

1000

0

0

1000

2000

3000

4000

5000

6000

0

1200

2400

3600

4800

6000

LwA Inlet

Tot

87

Frequency bands [Hz]

dB(A)

63

125

250

500

1k

2k

4k

8k

60

75

81

77

76

78

80

79

Measurement point: 5605 cfm, 0.25 in.wg (2645 l/s, 62 Pa)

7200

Q [cfm]

Q [cfm]

dB(A)

7200

Q [cfm]

Q [cfm]

0

12587, 12593

1000

Ps [in.wg]

500

1, 4

Ps [in.wg]

0

LwA Inlet

Tot

88

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

60

78

85

75

77

76

78

78

Measurement point: 6753 cfm, 0.25 in.wg (3187 l/s, 62 Pa)

Performance Certified is for Installation Type A: free inlet, free outlet. Performance ratings include the effects of an outlet bird screen. Speed (RPM) shown is nominal. Performance is based on actual speed of test. The sound power level ratings shown are in decibels, referred to 10-12 watts calculated per AMCA Standard 301. The A-weighted sound ratings shown have been calculated per AMCA Standard 301. Values shown are for LWiA sound power levels for Installation Type A: free inlet, free outlet. Ratings do not include the effects of duct end correction. All values shown are calculated at 0.25” (static pressure in inches W.G.). The AMCA Certified Ratings Seal does not apply to SFP performance data.

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Fans applications Nowadays, many residential buildings comprising several stories are equipped with ventilation systems to pull used air out of apartments. Most of the time they are sized for the maximum number of people present. The level of occupancy varies according to the time of day in question, which means that the installed ventilation system may be oversized, costing both money and energy unnecessarily. For this reason, Systemair offers a system that is demand-controlled with regard to occupancy and time of day. The DVC Roof fan is designed to exhaust used air in systems with a high static pressure in the ducts. The fan has a pressure control unit, which turns out to be a real “wonder control”. Together with BHC Self regulating valves installed in kitchens and bathrooms, the DVC-P Roof fan controls the exhausted air volume based on the pressure difference in the ducts.

Fans

DVC-P Roof fan

BHC Self regulating valve

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62 |

Fans Installation example

Roof fan DVC P/S

Flexible connection ASC

Flat roof socket FDS

Fans

A completely new generation of Systemair roof fans which were developed and built consistently according to the company‘s set target: low noise level, high performance. Especially suited to all uses and areas of application sensitive to noise. You can see and hear the result: a reduction in sound of almost 50 % at the same system performance and an increased level of efficiency compared to its predecessors.

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64 |

Air Distribution Products

| 65

Air Distribution Products

Air Distribution Products

BHC Return air self regulating motorized valve with motion and humidity sensor Function BHC 4 is a motorized damper with integrated motion (PIR) and humidity sensor for bathroom installations. It may be installed either on the wall (in a vertical or horizontal position), or the ceiling. The BHC extract unit offers a range of possible airflow settings to meet specific needs, or regulatory requirements. The fixed shutter can be set at one of six positions, with an average step between each setting of + 17 cfm (maximum = + 85 cfm). This can be very useful to compensate for a lack of pressure. The humidity and the motion sensors work independently of each other. The damper opens whenever motion is indicated and closes 25 min after the last indication. The humidity sensor controls the fully modulating damper from RH 30% to 75%. The movement sensor is dependent on a power supply and the BHC uses 12V AC. The humidity sensors will open the damper regardless of a power supply.

Dimensions

Spigot Versions Ø4” (100 mm) and Ø5” (125 mm with the adapter). Accessories • Ø4/5” inlet adapter • 12V transformer Airflow/Pressure Chart Enables the ability to adapt the fixed shutter position. Supplied in installation instructions. Buzzer Informs the occupant when the battery needs to be replaced (i.e. when the battery level is below 2.2V). This buzzer rings when the presence sensor or the switch is activated. Possibility to connect a dedicated “CAL” for 12VAC supply. 2 x 1.5 Volts AAA LR03 Batteries

SPECIFICATION data

BHC 4

A

B

C

D

67/8 (174)

11/3 (33)

19/11 (46)

62/3 (169)

Dimensions are in inches (mm)

Airflow in cfm at 0.4 in.wg 82

59 47

B

35

A

24 12

D

66 |

Data given on

C

4 inch (100 mm)

Air Distribution Products

| 67

Elegant AT Supply step diffuser Function The Elegant has been especially developed for providing a draught-free air supply from the rear walls of offices, hotel rooms, etc. The guide jet prevents the air stream from falling into the occupied zone before it has reached an acceptable temperature. Max. temperature difference ΔT=10K is permissible. The Elegant is also suitable for VAV systems, as the distribution pattern is maintained across the entire flow area. Design The Elegant is manufactured from steel and consists of a convex front plate with perforations and guide jet opening. The front plate is finished in the standard white powder-coating (RAL 9010-80).

Versions The Elegant is available in sizes 4” (100 mm) and 5” (125 mm). The Elegant AT has a perforated front plate. It can be mounted directly in a T-piece or preembedded bend. The air flow can be adjusted by using different combinations of plastic plugs. Mounting The diffuser is installed directly onto the spiral duct. To dismantle the supply air unit, turn the unit and pull straight out. Selection Table The table below shows the general product performance. For more details please see Systemair’s selection software.

SPECIFICATION data

Elegant AT4

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop in.wg (Pa)

13 (4)

0.27 (68)

0.45 (112)

0.63 (158)

Elegant AT5

13 (4)

16 (5)

13 (4)

13 (4)

16 (5)

0.19 (47)

0.31 (78)

0.44 (110)

20-25

30

35-40

cfm

26

35

44

53

l/s

12

17

21

25

dB (A)

Sound Power level, LW (dB)

Dimensions øA

øB

C

D

Elegant AT4

4 (98)

61/2 (165)

41/3 (111)

32/5 (87)

Elegant AT5

5 (123)

61/2 (165)

41/2 (115)

31/2 (89)

Dimensions are in inches (mm)

LW(dB) = LpA + Kok (LpA = diagram Kok = table) correction factor Kok dB(A)

Frequency bands [Hz] 63

125

250

500

1k

2k

4k

8k

Elegant AT 4

10

-5

-4

1

-1

-6

-10

-18

Elegant AT 5

13

1

0

-1

-1

-5

-6

-14

68 |

Air Distribution Products

SFD Floor Diffuser Description Circular diffuser with swirl air supply, suitable for false floor installation. Diffuser slots are designed to ensure a swirl air supply with high levels of induction, achieving reduced air velocities and a moderate temperature gradient in the occupied zone. The diffuser may be used in rooms with a variable or constant air volume.

Product Characteristics • Manufactured in aluminum • Sheet steel drip trap and swirl unit • High levels of induction • Simple to clean • Can be used with connection plenum

SPECIFICATION data

SFD 6

Airflow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

2,3 (0,7)

0,04 (10)

0,06 (15)

0,12 (30)

SFD 8

3,9 (1,2)

5,2 (1,6)

7,5 (2,3)

2 (0,6)

2,6 (0,8)

3,9 (1,2)

4,9 (1,5)

5,6 (1,7)

6,5 (2)

0,03 (7)

0,04 (11)

0,09 (23)

20-25

30

35-40

cfm

18

29

41

59

77

88

100

l/s

8

14

19

28

36

42

47

dB (A)

∆T = -6K When ∆T = -4K, then l0.2 x 1.2 ; ∆T = -8K, then l0.2 x 0.88

Dimensions øA

øB

C

SFD 6

71/2 (190)

57/8 (150)

87/8 (225)

SFD 8

93/7 (240)

78/9 (200)

109/11 (275)

Dimensions are in inches (mm)

Vertical throw

Horizontal throw

Air Distribution Products

NOVA-C Single deflection grille for circular ducts Function NOVA-C grille series are designed specifically to be installed onto round ducts. The construction allows the mounting of each grille height to various duct diameters. Adjustable single or double deflection with opposed blade design allows for full flexibility of the usage and a reduction in drafts in occupied zones and facilitates system balancing. All grilles are manufactured with a galvanized finish to match the look of the duct.

Design The frame, blades and the damper assembly are manufactured from rollformed galvanized sheet steel to provide a robust construction. Mounting NOVA-C grilles are pre-punched through the front face frame so they can be mounted onto the duct with self tapping screws. Selection Table Table below shows the general product performance. For more details please see Systemair’s selection software.

SPECIFICATION data Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

NOVA-C-1-9x3

46 (14)

72 (22)

NOVA-C-1-9x5

91 (28) 56 (17)

NOVA-C-1-13x3

49 (15)

79 (24)

82 (25)

NOVA-C-1-13x5

66 (20)

NOVA-C-1-17x3

53 (16)

91 (28)

0.06 (15)

0.15 (37)

0.2 (50)

98 (30)

0.05 (13)

0.10 (25)

0.15 (38)

98 (30)

0.05 (12)

0.13 (32)

0.17 (42)

0.05 (13)

0.10 (26)

0.14 (36)

0.04 (10)

0.12 (30)

0.15 (37)

20-25

30

35-40

95 (29)

118 (36) 108 (33)

cfm

132

176

221

309

362

398

456

l/s

62

83

104

146

171

188

215

Dimensions

dB (A)

Ducting Data Height of the grille H, inch (mm)

(H+11/ ”)x(L+11/ ”) 5 5

HxL

(H-7/ ”)x(L-7/ ”) 9 9

1”

øD



E, inch (mm) NOVA-C-1

Duct Diameter D, inch (mm) min

Max

11/4 (32)

5 (150)

16 (406)

5 (125)

11/4 (32)

12 (305)

36 (914)



Dimensions are in inches (mm) * L - Length of the grill, available in 3 sizes: 9, 13, 17 inches (225, 325, 425 mm)

NOVA-C-1

25

Duct penetration

3 (75)

E

øD

∆Pt - Pressure drop, in.wg (Pa)

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Air Distribution Products

NOVA-R Non-visible return air grille Function The grille is used to return air from internal premises. Because of the inclined deflectors, it’s not possible to see through the grille. The damper or plenum box balances the air.

Design NOVA-R grille is manufactured from natural anodized aluminum profiles painted white to RAL 9010. Deflectors are at a 45° angle inclined downwards for anti-rain function with a 7/9“ pitch.

Description NOVA-R is a sqare 24”x24” aluminum grille with fixed deflectors and can be used in commercial and industrial premises. The grille is intended for return air and is built into the ceiling. NOVA-R is supplied with springs as standard.

Mounting The NOVA-R grille can be mounted directly into a wall or celing on a T-bar, fixing with springs.

SPECIFICATION data Size

Air flow range, cfm (l/s)

∆Pt - Pressure drop, in.wg (Pa)

NOVA-R-24x24 cfm

398

589

779

l/s

188

278

368

0.01 (4)

0.04 (10)

0.05 (12)

20-25

30

35-40

dB (A)

Dimensions

NOVA-R-24x24

H

L

Free area, ft2 (m2)

Weight, lbs (kg)

24 (610)

24 (610)

1.72 (0.16)

6.4 (2.9)

Dimensions are in inches (mm)

HxL

T-bar

11/2” 1/ ” 5

(H+1/ ”)x(L+1/ ”) 4

4

Air Distribution Products

NOVA-E Egg crate return air grille Function The grille has a very large free area opening and therefore is ideal for return air. Description NOVA-E is a rectangular aluminum return grille with egg crate core which can be used in commercial and industrial premises. The grille is intended for return air and is build into the wall or ceiling. NOVA-E is supplied with springs as standard.

SPECIFICATION data Size

Air flow range, cfm (l/s)

∆Pt - Pressure drop, in.wg (Pa)

NOVA-E-24x24 cfm

1471

1765

2060

l/s

694

833

972

0 (2)

0.04 (9)

0.06 (15)

20-25

30

35-40

dB (A)

Dimensions

NOVA-E-24x24

H

L

Free area, ft2 (m2)

Weight, lbs (kg)

24 (610)

24 (610)

3.87 (0.36)

3.6 (1.62)

Dimensions are in inches (mm)

T-bar

HxL

11/2”

1/ ” 2

5

1/

(H+1/ ”)x(L+1/ ”) 4

4

Design NOVA-E grille is manufactured from aluminum profiles painted white to RAL 9010. If needed, the grille can be fitted into a T-bar ceiling with a 24” x 24” square opening.

Mounting The NOVA-E grille can be mounted directly into a wall or celing on a T-bar, fixing with springs.

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72 |

Air Distribution Products

Sinus-DR Rectangular duct or wall mounted nozzle supply diffuser Function Sinus-DR is a nozzle diffuser for duct mounting. Sinus-DR (for rectangular duct) consists of a front plate with several nozzles (size 57 mm) and a check rail. The design of the nozzles enables the diffuser to achieve very high induction of room air. The Sinus-DR can be used for both cooled and heated air. Max. temperature difference: ΔT 10 K. Mounting Make a hole in the duct according to the dimension table. The diffuser is fitted in the hole and fixed securely by screwing it to the duct. Ensure that the opening of the check rail is pointed against the direction of the air.

Acoustic characteristics Sound power level, Lw Lw(dB) = LpA + Kok (LpA = diagram Kok = table) correction factor Kok Mid-frequency band, Hz Sinus 63 125 250 500 1k 2k 4k 8k -DR 1001 4 8 7 1 -8 -14 -18 -13 -DR 1002 5 9 9 2 -8 -15 -17 -12 -DR 1003 8 11 8

1 -7 -15 -16 -13

-DR 1004 12 14 7 1 -6 -14 -17 -12 -DR 1501 4 7 8 2 -9 -14 -19 -16 -DR 1502 3 7 9 2 -8 -17 -20 -16 -DR 1503 7 10 8

2 -7 -15 -18 -15

-DR 1504 11 14 7 1 -5 -13 -17 -14 Tolerance ±4 ±2 ±1 ±1 ±3 ±3 ±6 ±8 Sound attenuation, ΔL (dB) Mid-frequency band, Hz Sinus 63 125 250 500 1k 2k 4k 8k -DR 1001 11 6 6 5 6 5 4 5

Dimensions

-DR 1002 11 6 5 5 6 5 4 5 -DR 1003 10 7 5 4 4 4 4 5

A

B

C

Size, hole

Sinus DR-1001

41 (1042)

41/3 (110)

21/3 (60)

381/5 x 23/4 (970x70)

Sinus DR-1501

601/3 (1542)

41/3 (110)

21/3 (60)

578/9 x 23/4 (1470x70)

Sinus DR-1002

41 (1042)

71/11 (180)

31/2 (90)

381/5 x 51/2 (970x140)

Sinus DR-1502

601/3 (1542)

71/11 (180)

31/2 (90)

578/9 x 51/2 (1470x140)

Sinus DR-1003

41 (1042)

99/11 (250)

5 (125)

381/5 x 81/4 (970x210)

Sinus DR-1503

601/3 (1542)

99/11 (250)

5 (125)

578/9 x 81/4 (1470x210)

Sinus DR-1004

41 (1042)

126/11 (320)

5 (125)

381/5 x 11 (970x280)

Sinus DR-1504

601/3 (1542)

126/11 (320)

5 (125)

578/9 x 11 (1470x280)

-DR 1004 9 7 5 4 4 3 3 6 -DR 1501 10 5 4 4 5 4 3 4 -DR 1502 10 5 3 4 5 4 3 4 -DR 1503 6 2 4 3 4 3 3 4 -DR 1504 6 5 4 3 3 2 3 5

11/2”

11/2”

Dimensions are in inches (mm)

SPECIFICATION data

Sinus DR-1001

Air flow range, cfm (l/s) and throw I0,2 (m)

∆Pt - Pressure drop, in.wg (Pa)

6 (2)

0.03 (7)

0.06 (16)

0.10 (25)

0.01 (4)

0.07 (18)

0.14 (34)

0.01 (4)

0.10 (26)

0.14 (37)

0.02 (5)

0.08 (20)

0.13 (32)

0.01 (4)

0.04 (11)

0.09 (23)

0.02 (6)

0.07 (17)

0.10 (26)

0.02 (5)

0.07 (17)

0.11 (27)

10 (3)

Sinus DR-1501

15 (5) 13 (4)

20 (6)

Sinus DR-1002

29 (9) 20 (6)

Sinus DR-1502

36 (11) 23 (7)

Sinus DR-1003

10 (3)

13 (4)

43 (13) 36 (11)

46 (14)

20 (6)

Sinus DR-1503

15 (5)

Sinus DR-1004

23 (7)

33 (10)

20 (6)

33 (10)

Sinus DR-1504

43 (13) 26 (8)

36 (11)

49 (15)

0.03 (8)

0.06 (15)

0.12 (29)

20-25

30

35-40

cfm

35

53

71

106

124

182

235

294

383

544

l/s

17

25

33

50

58

86

111

139

181

257

dB (A)

Air Distribution Products

Sinus-DC Circular duct mounted nozzle supply diffuser Function Sinus-DC is a nozzle diffuser for duct mounting. Sinus-DC (for circular duct) consists of a front plate with several nozzles (size 2 inches or 57 mm) and a check rail. The design of the nozzles enables the diffuser to achieve very high induction of room air. The Sinus-DC can be used for both cooled and heated air. Max. temperature difference: ΔT=10 K. Mounting Make a hole in the duct according to the dimension table. The diffuser is fitted in the hole and fixed securely by screwing it to the duct. Ensure that the opening of the check rail is pointed against the air flow.

Acoustic Data Sound power level, Lw Lw(dB) = LpA + Kok (LpA = diagram Kok = table) correction factor Kok Mid-frequency band, Hz Sinus 63 125 250 500 1k 2k 4k 8k -DC 1001 4 8 7 1 -8 -14 -18 -13 -DC 1002 5 9 9 2 -8 -15 -17 -12 -DC 1003 8 11 8

1 -7 -15 -16 -13

-DC 1004 12 14 7

1 -6 -14 -17 -12

-DC 1501 4 7 8 2 -9 -14 -19 -16 -DC 1502 3 7 9 2 -8 -17 -20 -16 -DC 1503 7 10 8

2 -7 -15 -18 -15

-DC 1504 11 14 7

1 -5 -13 -17 -14

Tolerance ±4 ±2 ±1 ±1 ±3 ±3 ±6 ±8 Sound attenuation, ΔL (dB) Mid-frequency band, Hz Sinus 63 125 250 500 1k 2k 4k 8k -DC 1001 11 6 6 5 6 5 4 5

Dimensions

-DC 1002 11 6 5 5 6 5 4 5 A

C

Size, hole

Fits, duct

Sinus DC-1001

41 (1040)

2 /4 (70)

38 /5 x 2 /4 (970x70)

4-10

Sinus DC-1501

601/3 (1540)

23/4 (70)

578/9 x 23/4 (1470x70)

4-10

Sinus DC-1002

41 (1040)

5 (125)

381/5 x 51/3 (970x135)

6-10

Sinus DC-1502

601/3 (1540)

5 (125)

578/9 x 51/3 (1470x135)

6-10

Sinus DC-1003

41 (1040)

71/4 (185)

381/5 x 77/8 (970x200)

12-24

Sinus DC-1503

60 /3 (1540)

7 /4 (185)

57 /9 x 7 /8 (1470x200)

12-24

Sinus DC-1004

41 (1040)

78/9 (200)

381/5 x 98/9 (970x250)

12-24

Sinus DC-1504

60 /3 (1540)

7 /9 (200)

57 /9 x 9 /9 (1470x250)

12-24

1

1

3

1

8

1

8

8

3

7

8

-DC 1003 10 7 5 4 4 4 4 5 -DC 1004 9 7 5 4 4 3 3 6 -DC 1501 10 5 4 4 5 4 3 4 -DC 1502 10 5 3 4 5 4 3 4 -DC 1503 6 2 4 3 4 3 3 4 -DC 1504 6 5 4 3 3 2 3 5

11/2”

1 ” 1 /2

Dimensions are in inches (mm)

SPECIFICATION data Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

Sinus DC-1001

6 (2)

0.03 (7)

0.06 (16)

0.10 (25)

0.01 (4)

0.07 (18)

0.14 (34)

0.01 (4)

0.10 (26)

0.14 (37)

0.02 (5)

0.08 (20)

0.13 (32)

0.01 (4)

0.04 (11)

0.09 (23)

0.02 (6)

0.07 (17)

0.10 (26)

0.02 (5)

0.07 (17)

0.11 (27)

10 (3)

Sinus DC-1501

15 (5) 13 (4)

20 (6)

Sinus DC-1002

29 (9) 20 (6)

Sinus DC-1502

36 (11) 23 (7)

Sinus DC-1003

10 (3)

13 (4)

43 (13) 36 (11)

46 (14)

20 (6)

Sinus DC-1503

15 (5)

Sinus DC-1004

23 (7)

33 (10)

20 (6)

33 (10)

Sinus DC-1504

43 (13) 26 (8)

36 (11)

49 (15)

0.03 (8)

0.06 (15)

0.12 (29)

20-25

30

35-40

cfm

35

53

71

106

124

182

235

294

383

544

l/s

17

25

33

50

58

86

111

139

181

257

dB (A)

| 73

Air Distribution Products

Kvadra Louver faced ceiling diffuser

2”

8

1/ ” 3

32

The connection transition KRC is manufactured from galvanized sheet metal and has a perforated metal sheet for pressure distribution and is simple to connect.

52

Design Kvadra is manufactured from aluminum with a white powder-coated finish (RAL9010). With the transition KRC (included) fits to imperial ducts 5”, 6”, 10”, 12” and 16”.

Mounting Correct adjustment requires a length of straight duct 4 times the duct diameter in front of the plenum box. The distribution unit is connected to the duct with screws or pop rivets. To dismantle the supply air unit, release the cones by gently pressing and turning the cones simultaneously. Reassemble the unit correspondingly. When assembling KRC to the Kvadra, make sure that the connection edges fit into the KRC hold down springs. Gently tap the two parts together so that the connection edges rest in the hold down springs.

11/4”

Function Kvadra supply- and exhaust diffusers for ceiling installation can be used in offices, shops or similar premises. It can be connected to square ducts or circular ducts via connection transition KRC or to a plenum box. The diffuser can be dismantled for duct cleaning. Kvadra has a high induction which makes it suitable for cooled air. Maximum temperature difference is ΔT=12 K.

Kvadra B

øD

I

Kvadra-5

5 /16 (150)

11 /8 (295)

5 (127)

5 /16 (145)

88/9 (226)

Kvadra-6

87/8 (225)

149/16 (370)

6 (152)

81/3 (220)

116/7 (301)

Kvadra-10

117/8 (300)

171/2 (445)

10 (254)

115/8 (295)

144/5 (376)

Kvadra-12

143/4 (375)

201/2 (520)

12 (305)

149/16 (370)

173/4 (451)

Kvadra-16

173/4 (450)

237/16 (595)

16 (406)

171/2 (445)

205/7 (526)

15

5

Size, hole 11

1 6/11 ”

A

40

Dimensions

3 6/11 ” 90

74 |

Dimensions are in inches (mm)

Accessory KRC

SPECIFICATION data

Kvadra-5

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

10 (3)

0.03 (7)

0.09 (21)

0.14 (37)

0.03 (8)

0.08 (19)

0.12 (30)

0.03 (9)

0.08 (20)

0.12 (30)

0.01 (4)

0.07 (18)

0.10 (25)

13 (4)

Kvadra-6

20 (6) 13 (4)

15 (5)

20 (6)

Kvadra-10

15 (5)

20 (6)

Kvadra-12

13 (4)

20 (6)

Kvadra-16

26 (8) 26 (8) 20 (6)

23 (7)

33 (10)

0.02 (5)

0.04 (10)

0.09 (21)

20-25

30

35-40

cfm

59

88

118

162

206

280

353

427

633

l/s

28

42

56

76

97

132

167

201

299

dB (A)

Air Distribution Products

VVKR Swirl ceiling supply and extract diffuser Function VVKR is a square ceiling swirl diffuser with manually adjustable air guiding blades which allows the airflow pattern to be adapted to the individual requirements of the room at any time. Ideal for use in shopping halls, receptions or offices. The diffuser can be used for supply or return air. The height of the room can be up to 13 feet (4 m). Swirled airstreams quickly lose speed and temperature thanks to high induction therefore it can be used for high air exchanges and temperature can vary from -10K to +10K. The front plate is installed to a plenum box with a screw.

to RAL9010 white. The blades are manufactured from black plastic. In the centre of the diffuser is a pre-punched hole for screw fixing. A screw with white decorative cap is provided along with a self adhesive seal. The seal must be applied at the installation site.

Design The diffuser is manufactured from galvanized steel powder painted

Non-insulated plenum box with inlet damper for supply air with square face size of 24” x 24” and duct connection 10”.

Mounting The diffuser is installed into a plenum box with a screw in the front face or inserted into a T-bar ceiling. Accessory VVK-0-P-H-1-Q-24/10 - Plenum box

SPECIFICATION data Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

VVKR-A-S-24x32

∆Pt - Pressure drop, in.wg (Pa)

6 (2)

6 (2)

6 (2)

0.04 (10)

0.07 (19)

0.11 (28)

20-25

30

35-40

cfm

88

118

146

176

206

235

280

l/s

42

56

69

83

97

111

132

Dimensions X

VVKR-A-S-24x32

24 /4 (616) 1

øD

K

H1

10 (254)

23 /2 (590) 1

131/3 (340)

2”

50

Dimensions are in inches (mm)

/3” 1

10

1/ ” 4

7

dB (A)

1 ” (K- /2 )

2”

(K-14)

50

| 75

Air Distribution Products

Sinus-F Square multi nozzle ceiling diffuser for T-bar ceiling Function Exterior dimensions are 24” x 24”. It is possible to remove the diffuser face to access the duct system. The front plate is attached with a chain to the main body for easy cleaning and service. Pull the front plate one step out from the main body to create an air gap around the diffuser. Max temp. diff. for cooled air is ΔT=12 K.

Acoustic Data

Mounting The diffuser is specially designed for flush mounting in a false ceiling, and directly suspended in the T-bar framework, and then fixed with the help of the connecting duct or plenum box.

Sound power level, Lw

Sound attenuation, ΔL (dB)

Mid-frequency band, Hz

Closed gap

63 125 250 500 1k 2k 4k 8k

Sinus-F-5-L Sinus-F-6-L Sinus-F-8-L Sinus-F-10-L Sinus-F-12-L

25 17 14 14 17 11 20 15 12 15 13 11 24 11 12

15 18 17 12 16 10 16 15 11 14 14 18 15 13 13 16 15 11 13 12 14 11 10 13 11 /9” (20 mm) open gap

7

Dimensions øB

Sinus-F-5-L

233/4 (603)

5 (127)

Sinus-F-6-L

233/4 (603)

6 (152)

Sinus-F-8-L

23 /4 (603)

8 (203)

Sinus-F-10-L

23 /4 (603)

10 (254)

Sinus-F-12-L

233/4 (603)

12 (305)

3

3

Lw(dB) = LpA + Kok (LpA = diagram Kok = table) correction factor Kok Mid-frequency band, Hz Open gap

63 125 250 500 1k 2k 4k 8k

Sinus-F-5-L Sinus-F-6-L Sinus-F-8-L Sinus-F-10-L Sinus-F-12-L

12 7 4 2 -4 -11 -13 -9 11 4 4 2 -1 -9 -17 -14 10 7 5 3 -2 -11 -18 -14 17 9 4 -2 -2 -7 -15 -14 11 12 3 0 -2 -9 -13 -12

Closed gap

A

Sinus-F-5-L Sinus-F-6-L Sinus-F-8-L Sinus-F-10-L Sinus-F-12-L

19/16”

40 11

13 7 4 3 -5 -12 -15 -11 11 6 5 2 -2 -10 -17 -15 5 6 4 4 -3 -12 -19 -17 16 10 5 -1 -2 -8 -14 -15 12 11 4 0 -1 -10 -18 -17

The diagram shows Air volume, cfm (l/s), total pressure, in.wg (Pa), throw (l0,2) and sound pressure level [dB(A)].

Dimensions are in inches (mm)

7/ ” 16

76 |

Sound attenuation ΔL, the air terminal device’s self-damping (dB), including its aperture damping, can be found in the tables below. SPECIFICATION data Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

Sinus-F-5-L

< 3 (1)

0.07 (18)

0.14 (36)

0.25 (63)

0.06 (16)

0.12 (30)

0.17 (42)

0.04 (10)

0.07 (18)

0.13 (33)

0.06 (15)

0.11 (28)

0.18 (44)

Sinus-F-6-L

< 3 (1)

3 (1)

3 (1)

3 (1)

3 (1)

3 (1)

6 (2)

Sinus-F-8-L Sinus-F-10-L

6 (2) 3 (1)

Sinus-F-12-L

6 (2)

9 (3)

6 (2)

9 (3)

9 (3)

0.06 (15)

0.10 (24)

0.13 (34)

20-25

30

35-40

cfm

159

212

286

350

477

636

795

953

l/s

21

28

38

46

62

83

104

125

dB (A)

Air Distribution Products

Sinus-C/T

Circular nozzle ceiling diffuser

Function The Sinus-C ceiling diffuser is suitable for visible connection and can be connected throught a transition to the duct using the connection sleeve fitted with a rubber seal tested for air tightness. The side gap is adjustable between 0 and 7/9” (0 and 20 mm) to enable increased air supply. The Sinus-C consists of a front plate with 2” (57 mm) nozzles and a soundinsulated plenum box and damper.

Acoustic Data

Max. temperature difference: ΔT=12 K.

Sinus-C/T-125 9 6 8 1 -9 -15 -13 -10

Mounting The Sinus C has to be connected directly onto a duct through a 4-12” transition with pop rivets or screws.

Sinus-C/T-200

Sound attenuation, ΔL (dB)

Mid-frequency band, Hz

open gap 63 125 250 500 1k 2k 4k 8k Sinus-C/T-100 9 2 8 -1 -8 -11 -8 -8 Sinus-C/T-125 10 3 7 1 -7 -12 -11 -8 Sinus-C/T-160

9

5

8

3 -10 -18 -17 -12

Sinus-C/T-200

6

7

6

3 -11 -19 -14 -11

Sinus-C/T-250

7 10 5

3 -11 -19 -16 -12

Sinus-C/T-315

6 13 6

1 -11 -18 -16 -10

closed gap Sinus-C/T-100

5

4 10 -1 -11 -16 -12 -12

Sinus-C/T-160 11 5

9

3 -10 -19 -18 -15

6 10 7

3 -11 -20 -16 -14

0...7/9” 0...20

B

øD

Sinus-C/T-4

121/3 (314)

61/3 (170)

4 (99)

Sinus-C/T-5

153/4 (399)

77/8 (200)

58/9 (124)

Sinus-C/T-6

153/4 (399)

97/8 (250)

61/5 (159)

Sinus-C/T-8

231/2 (599)

111/4 (285)

77/9 (199)

Sinus-C/T-10

231/2 (599)

13 (330)

93/4 (249)

Sinus-C/T-12

311/2 (800)

161/2 (420)

121/2 (314)

0...20

øA

0...7/9”

Dimensions

Dimensions are in inches (mm)

SPECIFICATION data Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

Sinus-C/T-4

3 (1)

0.04 (9)

0.13 (33)

0.22 (56)

0.02 (5)

0.07 (17)

0.18 (45)

0.01 (3)

0.06 (15)

0.11 (29) 0.15 (38)

Sinus-C/T-5

3 (1)

6 (2)

3 (1)

3 (1)

3 (1)

3 (1)

3 (1)

Sinus-C/T-6

6 (2)

Sinus-C/T-8

6 (2)

6 (2)

0.02 (5)

0.07 (18)

Sinus-C/T-10

6 (2)

6 (2)

0.05 (11)

0.10 (26)

Sinus-C/T-12

6 (2)

10 (3)

10 (3)

0.04 (9)

0.08 (19)

0.12 (29)

20-25

30

35-40

cfm

47

71

94

153

212

315

433

550

l/s

22

33

44

72

100

149

204

260

dB (A)

| 77

Air Distribution Products

CRSP High capacity swirl diffuser with fixed deflectors Description The CRSP swirl diffuser is specifically constructed to achieve larger air volume capacities with high induction levels. The diffuser is manufactured from plastic and comes standard in white. The CRSP has as standard a central screw fixing system for a M6 or M8 mounting screw. The diffuser has fixed deflectors to make it an ideal setting for cooling and heating for ceiling installations of 9-11 feet (2.7- 3.5 meter) and above.

ØD1

G

One-step reduction unit CRSP-RED (included) simplifies the duct connection.

Dimensions

CRSP-RED øD1

øE

øF

G

H

ØE

CRSP 4

4 (101)

61/2 (165)

71/2 (190)

6 (153)

21/2 (65)

ØD

CRSP 5

5 (127)

8 /9 (225)

9 /8 (250)

6 /4 (159)

3 /3 (85)

CRSP 6

6 (152)

10 /11 (275)

11 /8 (300)

6 (151)

41/8 (105)

CRSP 8

8 (203)

137/9 (350)

1415/16 (380)

61/2 (167)

51/8 (130)

CRSP 10

10 (254)

173/4 (450)

1815/16 (480)

615/16 (176)

62/3 (170)

CRSP 12

12 (305)

23 (585)

24 (610)

71/2 (183)

81/4 (210)

CRSP 16

16 (406)

2815/16 (735)

2915/16 (760)

n/a

101/4 (260)

8

9

7

1

7

1

H

78 |

ØF

CRSP

Dimensions are in inches (mm)

SPECIFICATION data Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

CRSP 4

3 (1)

0.07 (19)

0.13 (33)

0.24 (61)

0.09 (23)

0.16 (39)

0.23 (57)

0.10 (25)

0.17 (42)

0.24 (60)

0.09 (22)

0.16 (39)

0.24 (61)

0.06 (16)

0.11 (27)

0.22 (56)

0.06 (15)

0.16 (40)

0.28 (70)

6 (2)

CRSP 5

6 (2) 6 (2)

6 (2)

6 (2)

CRSP 6

6 (2)

CRSP 8

6 (2)

10 (3)

10 (3)

10 (3)

13 (4)

10 (3)

13 (4)

CRSP 10 CRSP 12

13 (4) 13 (4)

CRSP 16 cfm l/s

15 (5)

20 (6)

15 (5)

20 (6)

23 (7)

0.07 (17)

0.17 (42)

0.30 (75)

30

35-40

127

160

233

297

360

466

572

763

954

1377

1910

2331

2755

20-25

17

22

31

39

47

61

75

100

125

181

250

305

360

dB (A)

Throw data above is based on an installation height of 10 ft (3m)

Air Distribution Products

| 79

TSD

Circular swirl diffuser with adjustable blades heating and cooling due to its adjustable geometry construction. Installation height is between 13 and 49 feet (4 and 15 meters). The air stream pattern (horizontal, vertical and intermittent) can be adjusted manually or by a motor. The TSD consists of an inlet assembly containing the fixed blades and frontal conic outlet and an inner assembly with an adjustable set of deflectors which are mobile. For cooling, a horizontal outlet air pattern is achieved when the blades are in the closed position. They have a vertical swirl jet stream when the deflectors are in the fully open position to achieve heating in

Function TSD is designed for comfort ventilation of large buildings. It is suitable for

the occupied zone. Intermittent positions can be achieved when the deflectors are set between the closed and fully open positions for ventilation of the occupied zone Design The TSD swirl diffusers are manufactured of sheet steel, with a standard white (RAL 9010) powder paint finish. Mounting TSD can be mounted through a transition (included) to a vertical duct, or mounted to the entry plenum and then fixed to the ceiling with threaded drop-rods.

Dimensions

TSD-M

TSD øD

øE

TSD 14

12 /2 (313)

TSD 16

TSD-PB

øF

G

J

18 /4 (464)

15 (381)

5 /16 (145)

8 /16 (215)

12 /2 (317)

17 /9 (435)

18 /3 (474)

93/4 (248)

152/3 (398)

221/3 (567)

182/5 (468)

62/5 (157)

95/16 (236)

157/8 (402)

1711/14 (500)

227/8 (581)

121/3 (313)

TSD 24

24 /4 (628)

34 /3 (871)

27 /16 (700)

8 /9 (204)

14 /16 (367)

24 /4 (628)

29 /2 (750)

31 /16 (812)

152/3 (398)

TSD 30

312/5 (798)

422/5 (1077)

341/3 (871)

91/9 (229)

213/16 (538)

312/5 (798)

393/8 (1000)

439/16 (1081)

192/3 (498)

1

1

3

1

9

11

1

øI 7

7

K 1

L 1

3

1

øP 1

15

SPECIFICATION data Cooling

TSD 14

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

15 (5)

0 (2)

0.07 (18)

0.16 (41)

0.06 (16)

0.12 (29)

0.19 (47)

0.04 (11)

0.08 (19)

0.10 (25)

15 (5)

TSD 16

20 (6) 15 (5)

15 (5)

TSD 24

20 (6) 15 (5)

TSD 30

15 (5)

20 (6)

15 (5)

20 (6)

20 (6)

0.02 (6)

0.06 (14)

0.08 (19)

cfm

118

235

353

471

589

736

1104

1471

20-25

30

35-40

l/s

56

111

167

222

278

347

521

694

dB (A)

Heating

TSD 14

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

3 (1)

0 (2)

0.07 (18)

0.16 (41)

0.06 (16)

0.12 (29)

0.19 (47)

3 (1)

TSD 16

6 (2) 3 (1)

6 (2)

TSD 24

6 (2) 6 (2)

TSD 30

10 (3)

12 (4)

0.04 (11)

0.08 (19)

0.10 (25)

6 (2)

10 (3)

12 (4)

0.02 (6)

0.06 (14)

0.08 (19)

20-25

30

35-40

cfm

118

235

353

471

589

736

1104

1471

l/s

56

111

167

222

278

347

521

694

dB (A)

80 |

Air Distribution Products

IKD Circular ceiling diffuser with dual adjustable cones Function IKD is suited for comfort ventilation of large industrial buildings. It is suitable for heating and cooling because of the adjustable construction. Installation height is between 13 and 49 feet (4 and 15 meters). The air stream pattern (horizontal or vertical) can be adjusted manually or by an actuator. The IKD consists of an inlet cone and an inner and outer cage with openings for supply air in the peripheral surface and the underside. Dependent of the operation method, the openings in the peripheral surface (cooling, horizontal air stream) or the underside (heating, vertical air stream) are opened. There is no difference in pressure drop or sound level when the operation method is changed.

Dimensions øA

ød

L

K

IKD 8

117/8 (302)

71/16 (180)

52/3 (144)

31/9 (79)

IKD 10

157/8 (402)

97/8 (250)

7 (178)

37/8 (98)

IKD 12

193/4 (502)

122/5 (315)

72/3 (200)

43/4 (120)

IKD 16

2311/16 (602)

153/4 (400)

811/16 (221)

55/16 (136)

IKD 20

319/16 (802)

1911/16 (500)

121/5 (310)

71/4 (185)

SPECIFICATION data

Design The IKD is made of powder coated steel (RAL 9010) and is available in duct connection sizes 8, 10, 12, 16 and 20 inches. The standard type has a perforated plate (flow straightener). The plenum box is from galvanized steel and includes a damper. Mounting The IKD can be mounted through a transition (included) in a spiro duct or combined with the plenum box. Versions IKD – Standard version M3 – Actuator 24V, 0-10V stepless control

IKD Standard Version

IKD-M with Motor

Openings can be fixed with a screw on the peripheral surface.

For sizes 16-20 the motor is inside the diffuser, while for size 8-12 the motor is on the outside.

Cooling, Horizontal outlet -10K

IKD 8

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

10 (3)

0.05 (14)

IKD 10

13 (4) 6 (2)

IKD 12

20 (6) 10 (3)

15 (5)

13 (4)

15 (5)

IKD 16

10 (3)

IKD 20

23 (7) 15 (5)

23 (7)

13 (4)

20 (6)

0.12 (29)

0.21 (52)

0.04 (10)

0.06 (15)

0.16 (40)

0.03 (8)

0.06 (14)

0.18 (44)

0.04 (10)

0.09 (22)

0.18 (45)

26 (8)

0.01 (2)

0.03 (8)

0.12 (30)

20-25

30

35-40

cfm

118

182

235

383

647

912

1501

l/s

56

86

111

181

306

431

708

dB (A)

Heating, Vertical outlet at +15K Air flow range, cfm (l/s) and throw I0,2 ft (m) IKD 8

6 (2)

IKD 10

10 (3)

13 (4)

6 (2)

10 (3)

IKD 12

6 (2)

IKD 16

∆Pt - Pressure drop, in.wg (Pa)

15 (5) 10 (3)

15 (5)

6 (2)

13 (4)

20 (6)

6 (2)

10 (3)

IKD 20

0.05 (14)

0.12 (29)

0.21 (52)

0.04 (10)

0.06 (15)

0.16 (40)

0.03 (8)

0.06 (14)

0.18 (44)

0.04 (10)

0.09 (22)

0.18 (45)

15 (5)

0.01 (2)

0.03 (8)

0.12 (30)

20-25

30

35-40

cfm

118

182

235

383

647

912

1501

l/s

56

86

111

181

306

431

708

dB (A)

Air Distribution Products

JSR

Circular multi-cone jet diffuser with narrow concentric or wide cones for long or short air pattern Function The JSR is a circular multiple-cone diffuser for supplying air to large areas, which can be installed onto a PER plenum box or a duct. A scattered distribution pattern (short throw) or concentrated distribution pattern (long throw) can be set by rotating the diffuser 180°. This unit can be mounted on either the wall or the ceiling, and is suitable for both cooled and heated supply air. The angle of the diffuser can be set between 15 and 30° depending on the distribution pattern.

Mounting The diffuser can be mounted through a transition (included) onto a spiral duct and fixed with pop rivets. If the diffuser is fitted to a plenum box, there must be a straight length, 4 times the duct’s diameter, in front of the plenum box.

Design The JSR is manufactured from sheet metal with a white powder-coated finish (RAL 9010-80) and is available in the following diameters: Ø8, Ø10, Ø12, Ø16 and Ø20.



Acoustic Data The diagram shows airflow (l/s and cfm), total pressure (in.wg and Pa), throw l0,2 and sound pressure level [dB(A)]. Sound attenuation, ΔL (dB) Mid-frequency band, Hz

63 125 250 500 1k 2k 4k 8k JSR-8 13 9 4 - - - - JSR-10 11 7 3 - - - - JSR-12 10 5 2 - - - - JSR-16 8 4 1 - - - - JSR-20 7 3 1 - - - -

Dimensions A

øD

Sound power level, scattered distribution pattern, Lw

JSR 8

41/2 (115)

199

Lw(dB) = LpA + Kok (LpA = diagram Kok = table)

JSR 10

41/2 (115)

249

JSR 12

41/2 (115)

314

JSR 16

41/2 (115)

399

JSR 20

41/2 (115)

499

correction factor Kok

Mid-frequency band, Hz

125 250 500 1k 2k 4k 8k JSR-8 5 1 1 1 -5 -13 -19 JSR-10 5 2 0 0 -5 -12 -17 JSR-12 6 1 0 1 -6 -14 -18 JSR-16 6 2 1 0 -8 -13 -17

Dimensions are in inches (mm)

JSR-20 8 2 3 0 -9 -13 20 Sound power level, concentrated distribution pattern, Lw Concentrated distribution pattern (long throw)

Scattered distribution pattern (short throw)

JSR-8 3 -1 -2 1 -4 -13 -18 JSR-10 2 -1 -3 2 -6 -16 -20 JSR-12 1 -2 -3 2 -8 -18 -21 JSR-16 2 -1 4 0 -9 -14 -18 JSR-20 5 0 4 0 -13 -18 -22

SPECIFICATION data

Tolerance ±6 ±3 ±2 ±2 ±3 ±3 ±4

Size

Air flow range, cfm (l/s) and throw I0,2 ft (m)

∆Pt - Pressure drop, in.wg (Pa)

JSR 8

20 (6)

0.06 (16)

0.14 (34)

0.21 (52)

0.05 (13)

0.15 (38)

0.24 (59)

0.05 (12)

0.10 (24)

0.20 (49)

0.06 (15)

0.11 (28)

0.16 (41)

JSR 10

29 (9)

39 (12)

23 (7)

33 (10)

JSR 12

43 (13) 20 (6)

26 (8)

JSR 16

43 (13) 23 (7)

29 (9)

JSR 20

36 (11) 20 (6)

26 (8)

36 (11)

0.05 (12)

0.09 (23)

0.14 (34)

20-25

30

35-40

cfm

177

235

294

353

441

647

853

1059

1413

1766

l/s

83

111

139

167

208

306

403

500

667

833

dB (A)

| 81

82 |

Air Distribution Products

AJD Long throw adjustable nozzles Design The AJD long throw nozzles are manufactured in aluminium, with a white (RAL 9010) powder paint finish. The duct connection is manufactured of galvanised sheet steel.

Function The AJD nozzle has an extraordinarly good aesthetic design and can be painted by special order to fit any decorative need. The AJD nozzles provide long throws with a low noise level, releasing a long air jet with exceptional precision to a length of over 100 feet (30 m). They can be used for spot cooling and are especially appropriate for large rooms requiring a decorative look, for instance, large vestibules, entertainment areas, airport halls, department stores, hotels, etc.

Mounting The AJD can be mounted through a transition (included) with concealed screws. Versions IKD – Standard version IKD-M3 – Actuator 24V, 0-10V stepless control

The configuration allows the nozzle to swivel in all directions up to a maximum of ± 30° in the horizontal or vertical direction.

Dimensions L2

AJD 4

57/16 (138)

37/8 (98)

3 (78)

AJD 5

6 /3 (168)

4 /8 (123)

31/3 (86)

AJD 6

77/8 (200)

61/5 (158)

37/8 (98)

AJD 8

101/9 (257)

77/9 (198)

42/3 (117)

AJD 10

117/8 (302)

93/4 (248)

61/9 (155)

AJD 12

151/9 (384)

122/5 (313)

71/2 (183)

AJD 16

181/3 (467)

152/3 (398)

81/2 (208)

2

7

ØD3

øD4

ØD4

øD3

L2

Dimensions are in inches (mm)

SPECIFICATION data ∆Pt - Pressure drop, in.wg (Pa)

Size AJD 4

108 (33)

AJD 5

78 (24)

AJD 6

131 (40) 82 (25)

AJD 8

154 (47) 121 (37)

AJD 10

157 (48)

184 (56)

121 (37)

194 (59)

AJD 12

246 (75) 138 (42)

167 (51)

AJD 16

256 (78)

0.23 (57)

0.42 (105)

0.62 (155)

0.27 (68)

0.46 (115)

0.69 (171)

0.18 (46)

0.28 (70)

0.57 (142)

0.23 (57)

0.38 (96)

0.59 (146)

0.15 (37)

0.35 (87)

0.53 (133)

0.15 (37)

0.21 (52)

0.46 (114)

200 (61)

253 (77)

312 (95)

0.14 (36)

0.22 (55)

0.34 (86)

20-25

30

35-40

cfm

74

121

180

238

297

371

459

680

871

1062

l/s

35

57

85

112

140

175

217

321

411

501

dB (A)

Air Distribution Products

IR / IR-F

Iris damper for measuring and adjusting airflow Function The IR is an iris damper for measuring and adjusting air flow. The IR has the following specifications: low noise level, centrically formed air flow and fixed test points for precise measurements. The IR-F models are iris dampers fitted with a motor designed for controlling the air flow using two predetermined settings. The minimum and maximum air flow settings are adjusted with the help of a measuring nipple, and are fixed mechanically with damper stops. The IR-F models have a low sound level and produce a centrically patterned airflow. They are ideal for use as adjustable, motorized dampers. The damper also has an adjustment aperture which can be opened completely, which means there is no need for an access door for cleaning. Available in sizes Ø4”-25”. Max temperature for IR is 158°F (70°C).

Mounting The IR or IR-F adjustment dampers must be installed in accordance with the distances required to minimise air flow deviation. The IR enables the taking of precise air flow measurements at all points including points close to duct deviations such as T junctions and bends, and points in front of other supply-air devices (see below). Protective distance before bends afterbends before T-pipes after T-pipes before supply-air devices

1 X ØD 1 X ØD 3 X ØD 1 X ØD 3 X ØD

Selection Visit our online Catalogue at www.systemair.net to select an iris damper which fits your needs.

Design The damper is manufactured from galvanised sheet steel and is fitted with a rubber seal tested for air-tightness. The IR-F iris damper consists of an IR device with an actuator for forced air flow. It is manufactured from galvanised sheet steel, and equipped with test points for easy setup. Units are fitted with Belimo actuators, type LM24A-SR, with a 0-10V modulating control signal.

Dimensions

ød

øD

C

IR4

4 (99)

61/2 (163)

21/4 (54)

IR5

5 (124)

81/4 (210)

21/2 (53)

IR6

6 (159)

9 (230)

2 (54)

IR8

8 (199)

111/4 (285)

21/4 (62)

IR10

10 (249)

13 (333)

IR12

12 (299)

IR16

C

L

E

IR4-F

31/4 (82)

81/2 (215)

71/4 (185)

21/4 (62)

IR5-F

41/5 (106)

91/4 (235)

72/3 (195)

16 (405)

23/8 (65)

IR6-F

49/16 (116)

107/16 (265)

77/8 (200)

16 (399)

22 (560)

31/4 (70)

IR8-F

52/3 (143)

111/4 (285)

81/4 (210)

IR20

193/4 (499)

253/8 (644)

23/8 (60)

IR10-F

69/16 (167)

141/3 (365)

81/4 (210)

IR25

243/4 (629)

32 (811)

23/8 (60)

IR12-F

8 (203)

16 (408)

81/4 (210)

| 83

84 |

Air Distribution Products

RPK-R Constant volume damper with adjustable air flow Description RPK is a constant air flow regulator which is used for exact mechanical adjustment of required air volume in ventilation systems without any electrical requirements. RPK is characterized by: • regulation accuracy • easy mounting • maintenance-free • tight connection with the duct Function The RPK enables regulation of individually required amounts of air in separate ventilation system zones. RPK works from -4 to 176°F (-20 to 80°C) and relative humidity up to 80%. Recommended air flow velocity is from 580 to 1570 ft/min (3 to 8 m/s) a pressure differential of Δp=2 in.wg (500 Pa). Accuracy is ±5 %(±10% for outer settings).

MOUNTING

3” 76

6” 152

Design The RPK is manufactured from galvanized sheet metal, with an aluminum blade. All steel parts are zinc plated and the spring is made from high quality steel. The sliding bearing is suitable for high temperatures and doesn´t require any lubrication. The cover of the adjusting mechanism is made from ABS plastic and the functional parts are from PA plastic. Mounting The regulator can be mounted to horizontal, diagonal or vertical ducts. The blade must always be horizontal. It is necessary to pay attention to the mounting orientation, so that the air is entering the regulator according to the arrow direction located on the regulator casing. Connecting the duct and the regulator is done according to its size with rivets of the same diameter and the connection is sealed with sealing tape. After mounting, set the required air volume by turning the working screw on the controller box.

1 2/3” 45

1 2/3” 45

RPK-R

SPECIFICATION data V, ft/min (m/s)

q, cfm (l/s)

ød, “ (mm)

L, “ (mm)

L2, “ (mm)

L3, “ (mm)

M, lbs (kg)

RPK-R 4

725-1475 (3,7-7,5)

59 (28) - 118 (56)

37/8 (97)

133/4 (350)

31/3 (86)

55/6 (136)

2.2 (1)

RPK-R 5

630-1400 (3,2-7,1)

74 (35) - 177 (83)

43/8 (122)

143/16 (360)

4 (100)

57/8 (148)

2.6 (1.2)

RPK-R 6

845-1750 (4,3-8,9)

177 (83) - 365 (172)

61/5 (157)

1415/16 (380)

42/3 (117)

61/2 (166)

3.5 (1.6)

RPK-R 8

630-1435 (3,2-7,3)

206 (97) - 471 (222)

7 /4 (197)

15 /4 (400)

5 /16 (138)

7 /3 (186)

4.6 (2.1)

RPK-R 10

750-1475 (3,8-7,5)

383 (181) - 765 (361)

93/4 (247)

163/4 (425)

67/16 (164)

81/5 (208)

7.3 (3.3)

RPK-R 12

610-1260 (3,1-6,4)

500 (236) - 1030 (486)

121/4 (312)

1915/16 (500)

73/4 (196)

99/16 (243)

11 (5)

3

3

7

1

Air Distribution Products

| 85

Optima R Circular variable air volume damper Function

Controls

This VAV terminal unit is commonly used for return air applications or for supply applications at low system pressures. Terminal units are ideal for single zone control with supply and return in Master and Slave setup such as offices, hotel rooms or meeting rooms where the required cooling and heating load will vary on demand.

The standard VAV terminal units are equipped with a Belimo compact controller that does not include MP or any capability to be used as stand alone or in Master and Slave setting. The compact controllers which are supplied with MP-Bus communication capability, can be connected later in time to building management systems to create a zone control by creating bus-rings solutions.

Design VAV unit housing constructed of galvanized sheet steel, large surface pleated for extra stiffness. Special design of differential cross velocity pressure sensor assures accurate air flow readings even in difficult installations. Button punch snap lock seams, lock form with airtight nylon bearings assure low casing leakage. Dimensions L

Individual room comfort • Wide range of potential applications

Optima R4

4 (99)

153/4 (400)

• Adjustable to each application

Optima R5

5 (124)

311/2 (800)

Optima R6

6 (159)

311/2 (800)

• Demand-based single-room application

Optima R8

8 (199)

311/2 (800)

Optima R10

10 (249)

311/2 (800)

Optima R12

12 (299)

391/3 (1000)

Optima R16

16 (399)

391/3 (1000)

193/4 (499)

391/3 (1000)

243/4 (629)

391/3 (1000)

Optima R24

Compact controllers are factory calibrated prior to dispatch. Mounting The diffuser can be mounted through a transition (included) onto a spiral duct.

VAV-Compact Solutions øD

Optima R20

The compact controllers are equally available with MP-Bus and LON communication capability on demand.

3” 75

Intelligent simplicity with bus connection • System connection to DDC controller with MP interface via MP-Bus® • I ntegration with higher-level systems such as LonWorks®, Ethernet TCP/IP, Profibus DP, etc. via MP gateway

• Operation with Fan Optimiser

• M aximum flexibility in new and renovated buildings M

Fieldbus MP-Bus

t

Dimensions are in inches (mm)

Ethernet

2

1 /3 ” 45 2

75

MP gateway

L 1 /3 ” 45 2

1 /3 ” 45 2

ØD

1 /3 ” 45

3”

ØD

L

86 |

Fans

| 87

Accessories & Theory

Accessories

LDR

LD

Silencer for rectangular ducts

Easily-fitted silencer for circular ducts,fitted with a connection which is compatible with a standard spiral duct. The LD effectively reduces noise in the duct. Two silencers can be used together in installations where noise reduction is critical. For the most effective noise reduction, the silencer should be fitted immediately behind a fan or bend. The silencer should be used together with an insulated fan where there is a requirement for noise reduction both in the duct and in the surroundings as a whole. Insulation thickness 2” (50 mm).

This easily-fitted silencer can be installed immediately before Topvex TR air handling units. Effectively suppresses noise transmitted through the duct. The silencer should be used together with an insulated fan where there is a requirement for noise suppression both in the duct and in the surroundings as a whole. All silencers are supplied with a universal flange suitable for PG flange 7/9“ (20 mm). NB! Ensure that the LDR silencer is mounted in the correct position. Failure to do so will result in air starvation and a high pressure drop. dimensions Front area sq. inch LDR 20-10

200

Dimensions are in inches 37 2/5”

B c/c = H + 7/9”

Silencer for circular ducts

dimensions ød1

ød0

l

lbs

LD 6

6

101/4

235/8

12

LD 8

8

121/2

235/8

15

LD 10

10

14

351/2

26

LD 12

12

17 /4

35 /2

36

LD 16

16

25

351/2

54

3

1

c/c = B + 7/9”

RSK

Backdraft damper Backdraft damper for circular ducts, manufactured from galvanised sheet steel. The two blades are spring-loaded. The damper can also be mounted vertically.

Dimensions are in inches l

Ød0 Ødi

88 |

dimensions

Sound Power level, LW (dB) LD 6

øA

D

RSK 6

6

31/8

RSK 8

8

31/8

63

125 250 500 1k

2k

4k

8k

RSK 10

10

3

-

3

27

31

16

11

RSK 12

12

3

7

20

LD 8

2

3

7

16

21

23

9

8

LD 10

3

4

8

20

26

23

10

8

LD 12

1

3

7

16

22

12

6

7

LD 16

1

3

6

13

18

10

6

7

Dimensions are in inches

Accessories

EFD

EFD

Shut-off damper for rectangular ducts

Circular shut-off damper The EFD shutter damper is a shut-off damper. The damper is equipped with 24 V motors with spring-return actuators. The EFD conforms to leakage less than 1% of the local design airflow rate at the local maximum static pressure. The outdoor/exhaust air damper prevents the hot water coil from freezing. The EFD consists of a tubular housing equipped with a damper blade pivoting on an axle. The connection ends are equipped with silicon rubber sealing rings. The damper is made from hotdip galvanised sheet steel. The EFD shut-off damper is prepared for external insulation and has arrows showing the damper blade position.

EFD is a shut-off damper. The damper is provided with 24 V motors with spring-return actuators.The EFD conforms to leakage less than 1% of the local design airflow rate at the local maximum static pressure. The outdoor/exhaust air damper prevents the hot water coil from freezing and also prevents the cold air from cooling down the building if the unit stops. The EFD multi-leaf damper comprises a number of opposed blades, swivelling on nylon bearings in a sheet metal framework. The blades are connected via a system of linkages (protected) on the outside of the frame.

dimensions

dimensions øA

EFD 12

12

EFD 16

16

EFD 20-10

A

B

20

10

Dimensions are in inches

Dimensions are in inches

A 4”

12”

1/2”

7 3/4”

B



7/9"

2”

4”

12”

7 3/4”

øA



2”

2”

øA

7”

2”

2” 7”

1/2”

23/4”

51/2”

| 89

Accessories

ASC*

FC

Flexible connection

Fast clamps

Manufactured from galvanised sheet steel, with neoprene coated fabric. Rated for temperatures up to 158F (70°C). Suitable for use with DVC roof fan. A length h3 is 5” (125 mm). dimensions ø da

øe

ø di

zxd

ASC 10

91/4

81/3

71/5

6xø7

ASC 14

12

11 /5

10

6xø7

ASC 18-22

18 /4

17 /4

15 /13

6xø9

ASC 28-30

251/8

234/5

222/5

8xø9

1

1

1

11

Dimensions are in inches

Mounting clips which facilitate the installation and removal of fans for service and cleaning. Made from galvanised sheet steel and fitted with an 1/3” (8 mm) neoprene lining which suppresses vibration and ensures a tight fit. The mounting clips are clamped together by two screws which allow for connecting ducts with a marginal difference in diameter (6, 8, 10, 12, 16, 20 and 24 inch). 1/ 3

dimensions 1/ 3

"

"

21/3"

D

FDS

DS*

Flat roof socket FDS is manufactured from corrosion-resistant aluminum and is supplied ready for assembly with insulation rated for temperatures up to 212F (100°C). Suitable for use with DVC roof fans. Supplied with washers and screws. dimensions E

F

G

H

10

92/3

111/2

283/4

103/16

173/4

14

173/4

184/5

351/3

1615/16 251/9

18

173/4

217/8

383/7

198/9

28

22

21

243/5

391/4

221/4

304/5

30

291/2

351/5

453/16

328/9

351/5

Rectangular flexible connections Suitable for use with Topvex TR0615. Flange width 1” (25 mm) dimensions

F E



D

10

FDS

4 " 11 /5

A

B

C

DS 20-10

20

10

43/4

21/3

DS 28-12

28

12

3

4 /4

21/3

DS 32-14

32

14

43/4

21/3

DS 40-14

40

14

4 /4

21/3

3

B B+3/4 B+11/2

H D A A+3/4 A+11/2

D

G

* Contact your local Systemair representative for availability

D

Dimensions are in inches

Dimensions are in inches

C

90 |

Accessories

TG-R5/PT1000

BFT FR / BFT TR

Bag filter for Topvex FR/TR The Topvex FR/ TR units are delivered with bag filters as standard. Both of the filters are placed before the heat exchanger, to keep the exchanger clean. The filters are mounted in guide rails that facilitate insertion and removal for inspection and service. Topvex are fitted with sealing strips to provide optimal sealing around the filters. Filter class MERV13 on supply air and MERV9 on extract air are used as standard. Filter monitoring is done via the built-in timer (Standard controller) or via built in pressure transmitters measuring the pressure drop across the filters.

Pleated filter ERV The ERV Roof Top units are delivered with pleated filters as standard. Both of the filters are placed before the heat exchanger, to keep the exchanger clean. Filter class MERV11 on supply air and MERV7 on extract air are used as standard.

E-Bacnet-V Converter

E-Bacnet-V is a preconfigured converter used to connect a Corrigo E running the ventilation application to a SCADA system. Specification data Voltage supply Power consumption Weight

V/DC 12...48 W 4,5 lbs (kg) 0,42 (0,19)

MTP 10

Temperature sensor for room installation

Potentiometer Potentiometer 10kΩ for speed controlling MUB, DVC and K EC fans.

Specification data Ambient temperature Enclosure class

F (°C) 32..122 (0..50) IP 30

TG-UH/PT1000 Temperature sensor for outdoor installation Specification data Ambient temperature Enclosure class

For the manual control of speed and air flow of electrical fans with 0-10V output. The jetproof IP 54 enclosure is achieved with the included surface mounting case. Specification data Voltage supply

V 10, DC

Control signal

kOhm 0...10

Rangeabiility

V 0...10

Contact F (°C) -40..122 (-40..60) IP 65

E0-R

Enclosure class

A / V 4 / 250 IP 44

Weight

lbs (kg) 0.44 (0.2)

Timer Tork

Repeater Repeater E0-R is used when there are long distances between the Topvex FR or Topvex TR units and the SCP control panel. The E0-R can be used when the distance between the AHU and the SCP control panel is more than 33 ft (10 m) between the AHU and the SCP control panel. The repeater makes it possible to use a cable length up to 4000 ft (1200 m). The E0-R model should be mounted in a cabinet. Protection class IP20 and is powered by 24 VAC.

1 NO

Switching capacity

Digital time switch An electronic day/week timer with an automatic summer/winter time setting. Specification data Voltage supply

V 120...277

Frequency

Hz 50/60

Power consumption

VA 6 max - 40 ..+149 (- 40...+60)

Working temperature

F (°C)

Relatuve humidity

% RH 0...90

dimensions

CO2RT

CO2 Sensor CO2RT is a room sensor for measuring carbondioxide, CO2 concentration in indoor environments. Measuring range 0...2000ppm. Output signal 0...10 V for the full measuring range. Specification data Voltage supply

V 24

Frequency

Hz 50/60

Power consumption

W 3 max

Working temperature Enclosure class Relatuve humidity

F (°C)

- 40 ..+149 (- 40...+60)

IP 30 % RH 0...90

| 91

92 |

Accessories

IR24-P

Pre-heater Topvex FR

Presence detector A detector that gives a signal when someone is present in the room under supervision. The detector has a pulse detecting function that minimizes the risk for false alarm. Settable output on/off delay. Intended for wall or ceiling mounting. IR24-P is a presence detector designed for automatic ventilation control of HVAC systems. Specification data Voltage supply

V 24

Frequency

Hz 50/60

Circuit-breaking relay

NC/NO

Switching capacity

V / A 24 / 0,2

Working temperature

F (°C)

Enclosure class

- 4 ..+122 (- 20...+50)

IP 40

Relatuve humidity

The pre-heater is an option and can be ordered as an accessory, to be installed outside the FR unit. For proper operation, the correct indoor conditions must also be met. The common ambient indoor temperature for the winter season is 22°C with 30-40% RH. Operating outside of that range may result in condensation of the casing and a considerable reduction in airflow.

The roof curb makes it easy to install the ERV ECRT Roof top units on the site, and also function as a silencer. Manufactured from galvanised sheet steel and insulated with a 2” (50 mm) rockwool sheet.

Valve motor

RVAZ4 24A is a valve actuator controlled by a 0...10V signal. It requires a 24 VAC supply voltage. Suitable for controlling ZTV/ZTR valves. This product conforms with the EMC requirements of European harmonised standards EN60730-1:2000 and EN60730-2-8:2002 and carries the CE mark. Specification data 24 V AC +/15%

Specification data

Voltage supply

V

Pre-heater FR800

Power consumption

W max 6

Voltage supply Power consumption Current Weight

V 208 W 4500 A 7.2 lbs (kg) 37 (17)

% RH 0...95

Roof curb

RVAZ4 24A

Frequency Maximum stroke Full stroke time

sec 121

Stem force

Nm 400

Max. ambient humidity

Pre-heater FR1600 Voltage supply

V 208

Ambient temperature

Power consumption

W 9000

Enclosure class

Current

A 16

Weight

lbs (kg) 51 (23)

Hz 50/60 inch 1/5” (mm) 5.5

dimensions

%RH 95 °F (°C) 32..122 (0...50) IP 44

Accessories

ZTV/ZTR

Specification data Flow charac.

Water valve/ heating water, 2/3way

Percental increase

Media temp.

°F (°C) 34...230 (1...110) Hot, cold, glycol mixed (max. 30% glycol)

Media

inch 1/5” (mm) 5.5

Max. stroke

ZTV/ZTR is a 2 and 3-way control valve to control the flow of water to the heating coil. They are intended for use together with the RVAZ4 24A actuator.

Leakage

0% in closed position

Pressure class

PN16 (1.6MPa)

Rangeability

50:1

Mat.

Body Brass Spindle Stainless steel Seat Brass

O-ring

dimensions ZTV

EPDM

G ød

42

ZTR

I 60

Connection

G

I

h

1

/2”

9

40

/2”

9

40

/2”

9

40

/2”

9

40

/2”

9

40

/4”

12,5

40

/4”

12,5

40

/4”

11,5

50

/4”

11,5

50

-

65

1 /4”

-

66

1 1/4”

-

68

ZTV/ZTR 15-0.25

DN15

ZTV/ZTR 15-0.4

DN15

1

ZTV/ZTR 15-0.6

DN15

1

ZTV/ZTR 15-1.0

DN15

1

ZTV/ZTR 15-1.6

DN15

1

ZTV/ZTR 20-2.0

DN20

3

ZTV/ZTR 20-2.5

DN20

3

ZTV/ZTR 20-4.0

DN20

3

ZTV/ZTR 20-6.0

DN20

3

ZTV/ZTRB 25-8

DN25

1”

ZTV/ZTRB 25-15

DN32

ZTV/ZTRB 25-20

DN40

1

Dimensions are in inches (G) and in mm (l and h) Kvs

100

0,25

0,4

0,6

1

1,6 2 2,5

4 6

8

15

20

10

mVp

kPa

PRESSURE DROP

10

1

1 0,001

m3/h

0,1 l/s 0,01

0,005 0,01 0,02 0,1

0,05

0,1

0,2

0,5 1

1,0

2,0

5,0 8,0 10

28,8

| 93

94 |

Wiring diagrams

1

Cl. 3 / class 3

+ 0-10V External signal

P1 10k Potentiometer

Cl. 2 / class 2

Cl. 1 / class 1

12

RS A

Interface RS485 for ebmBUS

11

RS B

Interface RS485 for ebmBUS

10

RS A

Interface RS485 for ebmBUS

9

RS B

Interface RS485 for ebmBUS

8

GND

Ground

7

0-10V

Control-/Actual value inlet

6 4-20mA Control-/Actual value inlet 5

+20V

Supply ext. sensor 50mA

4

+10V

Supply ext. potentiometer 10mA

3

0-10V

Control/Actual value inlet

2

GND

Ground

1

OUT

Master exit 0-10V max 3mA

3

NO

Error signal relay, COMMON (2A, 250 VAC)

2

COM

1

NC

3

L1

2

N

1

PE

12

RS A

Interface RS485 for ebmBUS

11

RS B

Interface RS485 for ebmBUS

10

RS A

Interface RS485 for ebmBUS

9

RS B

Interface RS485 for ebmBUS

8

GND

Ground

7

0-10V

Control-/Actual value inlet

Error signal relay, closes in case of fire Mains, 50/60 Hz, Phase Mains, 50/60 Hz, Neitral Protective Earth

2

Cl. 3 / class 3

+ 0-10V External signal

P1 10k Potentiometer

Cl. 2 / class 2

Cl. 1 / class 1

6 4-20mA

Control-/Actual value inlet

5

+20V

Supply ext. sensor 50mA

4

+10V

Supply ext. potentiometer 10mA

3

0-10V

Control/Actual value inlet

2

GND

Ground

1

OUT

Master exit 0-10V max 3mA Error signal relay, closes in case of fire

3

NO

2

COM

1

NC

Error signal relay, error signal relay, closes in case of fire

3

L1

Mains, 50/60 Hz, L1

2

L2

Mains, 50/60 Hz, L2

1

L3

Mains, 50/60 Hz, L3

PE

Protective Earth

Error signal relay, COMMON (2A, 250 VAC)

Wiring diagrams

3

+ P1

0-10V -

10k

4

L

D

N

C

L

B

N

Internal potentiometer, default

A

120V 1~

1

2

3

4

1=Min

5

+

0

10

Protective Earth

3

GND

2

0-10V

1

+10V

Mains, 50/60 Hz, Neitral

2

COM

Alarm relay, normally closed

1

NC

3

PE

2

N

1

L

Line 2

Mains, 50/60 Hz, Phase

Alarm relay, COMMON

Line 1

Voltage output +10V max. 1.1 mA Control point Ground

| 95

Wiring diagrams

5

PE N L

Alarm relay Normally closed contact

Alarm relay

1 2 1 2

Fan ECmotor

PE N L

Mains

1 2 3 1 2 3

Mains 1

200-277 VAC 50/60 Hz

Fan ECmotor

Input

Operation model

Pressure control

GND 10 Night 9 GND 8 Day 7 GND 6 0-10V in 5 +10V 4 GND 3 0-10V out 2 Tacho in 1 3 2

Fan EC-motor

1 Red

GND 2 1

074/084

Blue

+20V in

Yellow White1 White2 Blue Black Green/yellow

+10V GND 0-10V NC COM L N PE

6

normally closed contact

alarm relay

alarm relay

fan (EC-motor)

1 2 1 2

PE N L PE N L

Mains

1 2 3 1 2 3

Input

operation mode

Pressure control

fan (EC-motor)

96 |

GND 10 9 GND 8 7 GND 6 5 +10V 4 GND 3 2 1

Fan EC-motor 112/150

3 2 1

12 11 10 9 8 7 6 5 4 3 2 1

GND 2 1

3

RS A RS B RS A RS B GND 0-10V 4-20mA +20V +10V 0-10V GND OUT

2

NO COM

1

NC

L1 L2

3 2

L1

L3

1

L3

PE

CL.3

L2 PE

Error signal relay, CL.2 COMMON (2A, 250 VAC)

CL.1

Error signal relay, COMMON (2A, 250 VAC)

Wiring diagrams

| 97

98 |

Theory Theory The intention of this Theory Section is to explain the basic principles of acoustics and ventilation. The theory section concludes with a description of the parts which are integral to a ventilation unit or an air-handling unit, i.e. fans, heaters, heat exchangers and filters. Explanatory texts and further information are provided in the margin. Some diagrams and formulas also feature in the margins, together with examples of their application. Fans ....................... .............................................................................................................. page 99 Heat recovery units ............ ................................................................................................. page 105 Acoustics ................................................................................................................................ page 108 Air distribution products ...................................................................................................... page 113

Theory Fans Fans are used in ventilating units to transport the air from various air intakes through the duct system to the room which is to be ventilated. Every fan must overcome the resistance created by having to force the air through ducts, bends and other ventilation equipment. This resistance causes a fall in pressure, and the size of this fall is a decisive factor when choosing the dimensions of each individual fan.

Blade profiles for radial fans The arrow indicated the impeller’s direction of rotation

Fans can be divided into a number of main groups determined by the impeller’s shape and its operating principle: radial fans, axial fans, semi-axial fans and cross-flow fans. Radial fan Radial fans are used when a high total pressure is required. The particular characteristics of a radial fan are essentially determined by the shape of the impeller and blades.

Backward curved

Figure 1: The air stream through a radial fan with forward-curved blades Backward-curved blades (B impeller): The air volume which can be delivered by backwardcurved blades varies considerably according to the pressure conditions. The blade form makes it less suitable for contaminated air. This type of fan is most efficient in a narrow range to the far left of the fan diagram. Up to 80% efficiency is achievable while keeping the fan’s sound levels low. Backward-angled straight blades (P impeller): Fans with this blade shape are well suited for contaminated air. Up to 70% efficiency can be achieved. Straight radial blades (R impeller): The blade shape prevents contaminants from sticking to the impeller even more effectively than with the P impeller. No more than 55% efficiency can be achieved with this type of fan. Forward-curved blades (F impeller): The air volume delivered by radial fans with forwardcurved blades is affected very little by changes in air pressure. The impeller is smaller than the B impeller, for example, and the fan unit consequently requires less space. Compared with the B impeller, this type of fan’s optimal efficiency is further to the right on the diagram. This means that one can select a fan with smaller dimensions by choosing a radial fan with an F impeller rather than a B impeller. An efficiency of approximately 60% can be achieved.

Straight radial

Axial fan The simplest type of axial fan is a propeller fan. A freely-rotating axial fan of this type has a very poor efficiency rating, so most axial fans are built into a cylindrical housing. Efficiency can also be increased by fitting directional vanes immediately behind the impeller to direct the air more accurately. The efficiency rating in a cylindrical housing can be 75% without directional vanes and up to 85% with them.

Forward curved

Figure 2: The air flow through an axial fan

| 99

100 | Theory Mixed flow fan Radial impellers produce a static pressure increase because of the centrifugal force acting in a radial direction. There is no equivalent pressure increase with axial impellers because the air flow is normally axial. The mixed flow fan is a mixture between radial and axial fans. The air flows in an axial direction but then is deflected 45° in the impeller. The radial velocity factor which is gained by this deflection causes a certain increase in pressure by means of the centrifugal force. Efficiency of up to 80% can be achieved.

Figure 3: The air flow through a mixed flow fan Cross-flow fan In a cross-flow fan the air flows straight across the impeller, and both the in and out flow are in the periphery of the impeller. In spite of its small diameter, the impeller can supply large volumes of air and is therefore suitable for building into small ventilation units, such as air curtains for example. Efficiency of up to 65% can be achieved.

Figure 4: The air flow through a cross-flow fan

Theory Fan curves The fan diagram indicates the fan’s capacity at different pressures. Each pressure corresponds to a certain air flow, which is illustrated by a fan curve. Pressure

Theoretical calculation of the system line 2

ΔP = k · q

v

Sys tem

line

where P - the fan’s total pressure, in.wg (Pa) qv - air flow, cfm (l/s) k - constant Example

Working point

Fa n

A certain fan produces an air flow of 3000 cfm (1416 l/s) at a pressure of 1 in.wg (250 Pa).

cu

rv e

A. How does one produce a system line in the diagram? Flow

Figure 5: Curves in a typical fan diagram System lines The duct system’s pressure requirement for various air flows is represented by the system line. The fan’s working point is indicated by the intersection between the system line and the fan curve. This shows the air flow which the duct system will produce. Each change of pressure in the ventilation system gives rise to a new system line. If the pressure increases, the system line will be the same as line B. If the pressure reduces, the system line will be the same as line C instead. (This only applies if the rotational speed of the impeller, i.e. the revolution count, remains constant).

a) Mark the point on the fan curve (1) where the pressure is 1 in.wg (250 Pa) and the air flow is 3000 cfm (1416 l/s). Enter the same value in the formula above to obtain a value for the constant k. k = ΔP/qv2 = 1/30002 = 0.0000001 b) Select an arbitrary pressure reduction, for example 0,4 in.wg (100 Pa) , calculate the air flow and mark point (2) in the diagram. q = 0,4/(0,00000011) = 1907 cfm

c) Do the same thing for 1,4 in.wg (350 Pa) and mark point (3) in the diagram. B

Pressure

C e lin Sy ste m

Sys tem

line

q = 1,4/(0,00000011) = 3550 cfm d) Now draw a curve that indicates the system line.

in.wg

1.5

1.0

Flow

Figure 6: Changes in pressure give rise to new system lines If the ventilation system’s actual pressure requirement is the same as system line B, the working point will move from 1 to 2. This will also entail a weaker air flow. In the same way, the air flow will increase if the system’s pressure requirement corresponds instead to line C.

0.5

0 500

1000

1500

2000

2500

3000

cfm

| 101

102 | Theory Pressure

B. What will happen if the pressure in the system increases by 0,4 in.wg (100 Pa) (for example because of a clogged filter)? e ti rv t a cu r ro n Fa aste (f

a) Calculate the constant for the new system line: k = 1,4/30002 = 0,00000015 B lin e Sy st em

q = 0,6/(0,00000015) = 1964 cfm q = 1/(0,00000015) = 2540 cfm

tem Sys

Fa (s n c lo u w rv er e ro ta tio

) on

b) Select two other pressure reductions, for example 0,6 in.wg (150 Pa) and 1 in.wg (250 Pa), and calculate the air flow for them.

line

C

n) Flow

Figure 7: Increase or reduction of the fan speed

To obtain the same air flow as calculated, one can in the first case (where the system line corresponds to B) quite simply increase the fan speed. The working point (4) will then be at the intersection of system line B and the fan curve for a higher rotational speed. In the same way, the fan speed can be reduced if the actual system line corresponds to line C.

in.wg

1.5

1.0

0.5

0 500

1000

1500

2000

2500

3000

cfm

Pressure

c) Plot in the two new points (2 and 3) and draw in the new system line. The new working point (4) is located at the intersection between the fan curve and the new system line. This diagram also indicates that the pressure increase causes a reduction of the air flow to approximately 2300 cfm (1085 l/s). Flow

Figure 8: Pressure differences at different rotational speeds

In both cases, there will be a certain difference in pressure from that of the system for which the dimensioning has been calculated, and this is shown as DP1 and DP2 respectively in the figure. This means that if the working point for the calculated system has been chosen so as to give the maximum degree of efficiency, any such increase or decrease of the fan’s rotational speed will reduce the fan’s efficiency.

Theory Efficiency and system lines To facilitate the selection of a fan, one can plot in a number of considered system lines in a fan diagram and then see between which lines a particular type of fan should operate. If the lines are numbered 0 to 10, the fan will be completely freeblowing (maximum air flow) at line 10 and will be completely choked (no air flow at all) at line 0. This then means that the fan at system line 4 produces 40% of its free-blowing air flow. Pressure

Flow

Figure 9: System lines (0-10) in a fan diagram Each fan’s efficiency remains constant along one and the same system line. Fans with backward-curved blades frequently have a greater efficiency than fans with forward-curved blades. But these higher levels of efficiency are only achievable within a limited area where the system line represents a weaker air flow at a given pressure than is the case with fans with forward-curved blades. To achieve the same air flow as for a fan with forward-curved blades, while at the same time maintaining a high level of efficiency, a fan with backward-curving blades in a larger size would have to be selected. Efficiency (η) η max (backward-curved) η max (forward-curved)

System line

Figure 10: Efficiency values for the same size of radial fan with backward-curved and forward-curved blades respectively

Definition of the system line ΔPd L = 10 · ΔP t where L - the fan’s system line Pd - dynamic pressure, in.wg (Pa) Pt - total pressure, in.wg (Pa)

| 103

104 | Theory Fan application Efficiency of a fan η=

ΔPt · q P

It is assumed in the fan diagram that the fan’s connections to the inlet and outlet are designed in a specific way. There must be at least 1 x the duct diameter on the suction side (inlet) and 3 x the duct diameter on the pressure side (outlet).

where Pt = total pressure, in.wg (Pa) q = airflow, cfm (l/s) P = power, W Specific Fan Power The Specific fan power for an entire building

SFPE =

Ptf + Pff (W/l/s) qf

where Ptf - total power for air supply fans, W Pff - total power for air extract fans, W qf - dimensioned air flow, l/s Theoretical calculations of a fan’s power consumption p ·q P = η · ηt · η fan belt motor

Figure 11: Correctly installed duct fan If the connections are different from this, there could be a greater pressure reduction. This extra pressure drop is called the system effect or system dissipation, and can cause the fan to produce a smaller volume of air than indicated in the fan diagram. The following factors must be considered in order to avoid system dissipation: At the inlet

where P - the fan’s consumption of electric power from the network, W Pt - the fan’s total pressure, Pa q - air flow, l/s hfan - the fan’s efficiency hbelt - efficiency of the transmittion hmotor - efficiency of the fan’s motor

• The distance to the nearest wall must be more than 0.75 x the inlet’s diameter • The inlet duct’s cross-section must not be greater than 112% or less than 92% of the fan inlet • The inlet duct’s length must be at least 1 x the duct diameter • The inlet duct must not have any obstacles to the air flow (dampers, branching or similar) At the outlet • The angle at the reduction of the duct cross-section must be less than 15° • The angle at the enlargement of the duct cross-section must be less than 7° • A straight length of at least 3 x the duct diameter is required after a duct fan • Avoid 90° bends (use 45°) • Bends must be shaped so that they follow the air stream after the fan Specific Fan Power There are now stringent requirements to ensure that power consumption in a building is as efficient as possible so as to minimise energy costs. The Svenska Inneklimatinstitutet [Swedish Inner Climate Institute] has introduced a special concept known as the Specific Fan Power (SFPE) as a measurement of a ventilation system’s energy efficiency. The Specific Fan Power for an entire building can be defined as the total energy efficiency of all the fans in the ventilation system divided by the total air flow through the building. The lower the value, the more efficient the system is at transferring the air. The recommendations for public sector purchasing and similar are that the maximum SFPE should be 2.0 when maintaining and repairing ventilating units, and 1.5 for new installations.

Theory Heat recovery units

Heat is transferred by a rotating wheel between exhaust and supply air. This system is open and there is a risk that impurities and odours will be transferred from the exhaust to the supply air. This can be avoided to some extent a correctly designed ventilation system with the right pressure conditions or by positioning the fans in a preventing way. The degree of heat recovery can be regulated by increasing or decreasing the rotational speed. There is little risk of freezing in the heat recovery unit. Rotary heat exchange units contain moving parts. High efficiency (75-85%). Coil heat recovery units Water, or water mixed with glycol, circulates between a water coil in the exhaust air duct and a water coil in the supply air duct. The liquid in the exhaust air duct is heated so that it can transfer the heat to the air in the supply air duct. The liquid circulates in a closed system and there is no risk of transferring impurities from exhaust air to supply air. Heat recovery can be regulated by increasing or decreasing the water flow. Coil heat recovery units have no moving parts. Low efficiency (45-60%). Chamber heat exchangers A chamber is divided into two parts by a damper valve. The exhaust air first heats one part of the chamber, then the damper valve changes the air stream so that the supply air is heated by the warmed-up part of the chamber. Impurities and odours can be transferred from exhaust air to supply air. The only moving part in a chamber heat exchanger is the damper valve. High efficiency (8090%). Heat pipe This heat recovery unit consists of a closed system of pipes filled with a liquid that vaporises when heated by the exhaust air. When the supply air passes the pipes, the vapour condenses back into liquid again. There can be no transfer of impurities, and the heat recovery unit has no moving parts. Low efficiency (50-70%).

Counterflow plate heat recovery units The air streams (exhaust and supply air) pass in opposite directions through the entire heat recovery unit, which results in an efficient recovery of heat. exhaust air

Rotary heat recovery units

where tu - outside air temperature tf - exhaust air temperature (no heat recovery) ti - supply air temperature (after heat recovery)

supply air

The exhaust air and supply air pass on each side of a number of plates or lamellae. The exhaust- and supply air are not in contact with each other which results in low leakage. There may be some condensation in a plate heat recovery unit, so they need to be fitted with condensation drains. The drains should have a water seal to prevent the fans from sending the water back into the unit. Because of this condensation there is also a serious risk of ice formation, so some type of defrosting system is also needed. Heat recovery can be regulated by means of a bypass valve which controls the intake of exhaust air. Plate heat recovery units have no moving parts. High efficiency (50-90%).

t -t η= i u tf - tu

extract air

Plate heat recovery units

Thermal efficiency

outdoor air

In a ventilating unit, it is often economical to attempt to recover the heat which is contained in the exhaust air and use it to warm the supply air. There are several methods for achieving this type of heat recovery.

| 105

106 | Theory Heating coils

Water-heating coil The power input (kW) to a water-heating coil in a ventilating unit is: Q=

L · 1,2 · (t -t ) · (1-η) i u 3600

In most cases the outside air is colder than the required temperature for the supply air, so it is often necessary to warm the air before it enters the building. The air can be warmed in a heating coil, by using either a hot water, or an electric heating coil. Electric-heating coil

where L - airflow (cfm) ti - required supply air temperature, F(°C) tu - dimensioned outside air temperature, F(°C) η - efficiency of the heat recovery unit

An electric-heating coil consists of a number of enclosed metal filaments or wire spirals. They create an electrical resistance which converts the energy to heat. The advantages of the electric coil are: it has a small pressure drop, it is easy to calculate the power and it is inexpensive to install. The disadvantage is that the metal filaments have a considerable heat inertia so the electric battery has to be fitted with overheating protection. Water-heating coil

Water coil The hot water should be conducted in the opposite direction to the air, otherwise it will cool too quickly and the water coil’s warming of the air will not be as efficient.

Crossflow water-heating coils are the most common type of water-heating coils in ventilation units. The water flows at right angles and in the opposite direction to the air stream. The water is conducted from below and flows upwards through the coil, and this allows any air bubbles to collect at the highest point where they can be easily drawn off via a ventilating pipe. Water-heating coils have to be protected against ice formation to ensure they do not crack as a result of freezing. The greatest risk of this happening is actually when the air temperature is immediately below 0°C. Most water coils therefore have a frost guard which stops the intake of fresh air when there is a risk of freezing. Because still water freezes faster than flowing water, it is also usual to fit an internal pump which keeps the water flowing through the coils.

Air

Water

The air velocity through the coils, calculated for the entire front area, should be dimensioned to 390-985 ft/min (2-5 m/s). The water velocity should not be below 40 ft/min (0.2 m/s), as this could cause difficulties with venting. Nor should the water velocity be higher than 295 ft/ min (1.5 m/s) in copper pipes or 590 ft/min (3 m/s) in steel pipes, as this could lead to erosion of the metal pipes. Filters There are two reasons for using filters in an air-handling unit: to prevent impurities in the outside air from entering the building and to protect the unit’s components from contamination. An analysis of the impurities in the air indicates that among other things the air contains soot particles, smoke, metallic dust, pollen, viruses and bacteria. The particles vary in size from less than 1 µm to whole fibres, leaves and insects. It is thought that these pollutants are a significant contributing factor in the cause of many asthmatic and allergic conditions, and it is therefore important for people to protect themselves against them. Since as much as 99.99% of all particles in the air are smaller than 1 µm, it is necessary to use filters in a ventilation system that are adequately fine-meshed. The filter’s capacity to trap particles is called its Dust Holding Capacity and filters are often divided into three classes depending on this capacity: coarse filters, fine filters and absolute filters. Filter classes according ASHRAE 52.1-1992 Throwaway, washable and electrostatic filters .................................................. MERV1 to MERV4 Cartridge and pleated filters .................................................................................. MERV5 to MERV8 Box and bag filters ................................................................................................ MERV9 to MERV16 HEPA/ULPA Filters ............................................................................................... MERV17 to MERV20 The coarse filter essentially only traps particles larger than 5 µm, and has virtually no effect at all on particles smaller than 2 µm. This means, therefore, that it does not trap soot particles, which are the most prevalent impurities in the outside air. Fine filters should be fitted in a ventilation unit instead. The best fine filters work effectively with particles larger than 0.1 µm, and therefore trap the most important impurities in the outside air.

Theory Pressure drop The pressure drop caused by a completely clean filter is called the start pressure drop, and this is somewhere between 0,32 in.wg (80 Pa) and 0,48 in.wg (120 Pa) for fine filters. After impurities have been trapped by the filter, the pressure drop will increase and the air flow will be reduced. Eventually there will be a pressure drop which makes the filter no longer usable. For fine filters this will be between 0,8 in.wg (200 Pa) and 1,0 in.wg (250 Pa). It is usual for filters in a unit to be fitted with some kind of filter monitor which constantly measures the pressure drop caused by the filter. This can give a signal when a pre-set pressure drop has been reached and it is time to replace the filter. In any event it is advisable to replace the filter twice a year, irrespective of whether or not the final pressure drop has been reached, so as to prevent the dirt in the filter becoming a breeding ground for bacteria. Suppliers of filters have been debating for a long time as to whether glass fibre or synthetic fibre provides the best filter material. Some research has been carried out, but without any clear results. It appears, however, that glass fibre filters maintain a better Dust Holding Capacity throughout their working life. Just as important as the selection of the filter material is the need to ensure that there is a good seal around the filter to prevent dirt and dust passing around the edge. The filter housing should be designed so that repeated filter replacements can be made without any space developing between the filter and the housing. It is also important to protect the filter from moisture as this can alter the characteristics of the filter fibres and impair its Dust Holding Capacity. Glass fibre filters are more susceptible to the effects of moisture than synthetic filters.

| 107

108 | Theory Calculation of equivalent absorption area Aeqv Aeqv = α1 · S1 · α2 · S2 + ... + αn + Sn where Sn - a size of surface, sq.ft (m2) a - an absorption factor, depending on the material n - a number of surfaces Calculations of sound pressure level Estimate based on figures 1, 2 and 3 together with table 1. A normally damped room in a nursing home, measuring 1060 ft3 (30 cub.m), is to be ventilated. According to the information in the catalogue, the directional supply-air terminal device fitted in the ceiling has a sound pressure level (LpA) of 33 dB(A). This applies to a room with a space damping equivalent to 107 ft2 (10 sq.m) Sabine, or 4 dB(A). A) What will the sound pressure level be in this room, 3,28 ft (1 m) from the diffuser? The sound pressure level depends on the room’s acoustic properties, so first of all it is necessary to convert the value in the catalogue to a sound power level (LWA). Fig.14 shows that ΔL (space damping) = LpA - LWA LWA = LpA + ΔL LWA = 33 + 4 = 37 dB(A)

ACOUSTICS Basic principles of sound Before we discuss the connection between the sound power level and the sound pressure level, we must define certain basic concepts such as sound pressure, sound power and frequency. Sound pressure Sound pressure is the pressure waves with which the sound moves in a medium, for instance air. The ear interprets these pressure waves as sound. They are measured in Pascal (Pa). The weakest sound pressure that the ear can interpret is 0.00002 Pa, which is the threshold of hearing. The strongest sound pressure which the ear can tolerate without damage is 20 Pa, referred to as the upper threshold of hearing. The large difference in pressure, as measured in Pa, between the threshold of hearing and the upper threshold of hearing, makes the figures difficult to handle. So a logarithmic scale is used instead, which is based on the difference between the actual sound pressure level and the sound pressure at the threshold of hearing. This scale uses the decibel (dB) unit of measurement, where the threshold of hearing is equal to 0 dB and the upper threshold of hearing is 120 dB. The sound pressure reduces as the distance from the sound source increases, and is affected by the room’s characteristics and the location of the sound source. Sound power Sound power is the energy per time unit (Watt) which the sound source emits. The sound power is not measured, but it is calculated from the sound pressure. There is a logarithmic scale for sound power similar to the scale for sound pressure. The sound power is not dependent on the position of the sound source or the room’s sound properties, and it is therefore easier to compare between different objects. Frequency Frequency is a measurement of the sound source’s periodic oscillations. Frequency is measured as the number of oscillations per second, where one oscillation per second equals 1 Hertz (Hz). More oscillations per second, i.e. a higher frequency, produces a higher tone. Frequencies are often divided into 8 groups, known as octave bands: 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz and 8000 Hz. Sound power level and sound pressure level There is a link between a sound source’s sound power level and the sound pressure level. If a sound source emits a certain sound power level, the following factors will affect the sound pressure level: The position of the sound source in the room, including the direction factor (1), the distance from the sound source (2) and the room’s sound-absorbing properties, referred to as the room’s equivalent absorption area (3). 1) Direction factor, Q The direction factor indicates the sound’s distribution around the sound source. A distribution in all directions, spherical, is measured as Q = 1. Distribution from a diffuser positioned in the middle of a wall is hespherical, measured as Q = 2.

Q = 1 In centre of room Q = 2 On wall or ceiling Q = 4 Between wall or ceiling Q = 8 In a corner Figure 12: The distribution of sound around the sound source

Theory 2) Distance from sound source, r

With the following values

where r indicates the distance from the sound source in metres.

r=1 Q = 2 (fig. 12)

A material’s ability to absorb sound is indicated as absorption factor a. The absorption factor can have a value between ‘0’ and ‘1’, where the value ‘1’ corresponds to a fully absorbent surface and the value ‘0’ to a fully reflective surface. The absorption factor depends on the qualities of the material, and tables are available which indicate the value for different materials. A room’s equivalent absorption area is measured in ft2 (m2) and is obtained by adding together all the different surfaces of the room multiplied by their respective absorption factors.

and information about the room’s dimensions, you can calculate the equivalent absorption area with the help of figure 13. Equivalent absorption area (m2)

3) The room’s equivalent absorption area, Aeqv

In many instances it can be simpler to use the mean value for sound absorption in different types of rooms, together with an estimate of the equivalent absorption area (see figure 13). 4) Equivalent absorption area based on estimates

Room volume (m3)

If values are not available for the absorption factors of all the surfaces, and a more approximate value of the room’s total absorption factor is quite adequate, an estimate can be calculated in accordance with the diagram below. The diagram is valid for rooms with normal proportions, for example 1:1 or 5:2.

Equivalent absorption area (m2)

Use the diagram as follows to estimate the equivalent absorption area: calculate the room’s volume and read off the equivalent absorption area with the correct mean absorption factor, determined by the type of room, see also table 1.

room with high attenuation factor room with damping normal room less hard room hard room

The equivalent absorption area is therefore 4 m2. It is now possible to use figure 3 to establish the difference between the sound pressure and the sound power.

LpA - LWA = 0 LpA = 0 + LWA Enter the LWA value which has already been calculated. LpA = 0 + 37 = 37 dB(A) A) The sound pressure level (LpA) one metre from the diffuser in this particular nursing home room is therefore 37 dB(A)

Room volume (m3) room with high attenuation factor room with damping normal room less hard room hard room

The less damped (harder) the room is, the higher the actual sound pressure level will be in comparison with the value indicated in the catalogue.

Figure 13: Estimate of equivalent absorption area Type of room

Mean absorption factor

Radio studios, music rooms

0.30 - 0.45

TV studios, department stores, reading rooms

0.15 - 0.25

Domestic housing, offices, hotel & conference rooms, theatres

0.10 - 0.15

School halls, nursing homes, small churches

0.05 - 0.10

Industrial premises, swimming pools, large churches

0.03 - 0.05

Table 1: Mean absorption factors for different types of rooms

This calculation has to be made for all rooms not corresponding to the information in the catalogue which assumes a standard 10 m2 Sabine.

| 109

110 | Theory Calculation of sound pressure level

Calculation of sound level

[

4 Q + LpA = LwA + 10 · log 4πr2 Aeqv

]

where LpA - sound pressure level, dB LwA - sound power level, dB Q - direction factor r - distance from sound source, ft(m) Aeqv - equivalent absorption area, ft2 (sq.m) Sabine

With the help of the factors previously described, it is now possible to calculate the sound pressure level if the sound power level is known. The sound pressure level can be calculated by means of a formula incorporating these factors, but this equation can also be reproduced in the form of a diagram. When the diagram is used for calculating the sound pressure level, you must start with the distance in metres from the sound source (r), apply the appropriate directional factor (Q), and then read off the difference between the sound power level and the sound pressure level next to the relevant equivalent absorption area (Aeqv). This result is then added to the previously calculated sound power (see also the example on page 113).

Calculations of reverberation time If a room is not too effectively damped (i.e. with a mean absorption factor of less than 0.25), the room’s reverberation time can be calculated with the help of Sabine’s formula: V T = 0,163 · Aeqv

ΔL = LpA - LWA

The room’s equivalent absorption area

where T - reverberation time (s). Time for a 60 dB reduction of the sound pressure value V - room volume, ft3 (cub.m) Aeqv - the room’s equivalent absorption area, ft2

Distance from sound source, r

Figure 14: Diagram for estimating the sound pressure level Near field and reverberation field Near field is the term used for the area where the sound from the sound source dominates the sound level. The reverberation field is the area where the reflected sound is dominant, and it is no longer possible to determine where the original sound comes from. The direct sound diminishes as the distance from the sound source increases, while the reflected sound has approximately the same value in all parts of the room.

Figure 15: Direct and reflected sound The reverberation time indicates the time it takes for the sound level to reduce by 60 dB from the initial value. This is the echo effect one hears in a quiet room when a powerful sound source is switched off. If the reverberation time is measured precisely enough, the equivalent absorption area can be calculated.

Theory Several sound sources To establish the total sound level in a room, all the sound sources must be added together logarithmically. It is, however, often more practicable to use a diagram to calculate the addition or subtraction of two dB values. Addition The input value for the diagram is the difference in dB between the two sound levels which are to be added. The dB value to be added to the highest sound level can then be read off the scale.

Example of addition There are two sound sources, 40 dB and 38 dB respectively. 1) What is the value of the total sound level? To add to the higher level, (dB)

To add to the higher level, (dB)

Difference between the levels to be added, (dB)

The difference between the sound levels is 2 dB and, according to the diagram, 2 dB must be added to the highest level. 1) The total sound level is therefore 42 dB. Difference between the levels to be added, (dB)

Figure 16: Logarithmic addition Subtraction The input value for the diagram is the difference in dB between the total sound level and the known sound source. The y scale then shows the number of dB that have to be deducted from the total sound level to obtain the value for the unknown sound source.

Example of subtraction The total sound level is 34 dB in a room fitted with both supply and exhaust ventilation systems. It is known that the supply system produces 32 dB, but the value for the exhaust system is not known. 2) What is the sound level produced by the exhaust system? To deduct from the total level (dB)

To deduct from the total level (dB)

Difference between the total level and sound source

Difference between the total level and sound source

Figure 17: Logarithmic subtraction

The difference between the total sound level and the sound level of the supply system is 2 dB. The diagram indicates that 4 dB must be deducted from the total level. 3) Therefore the exhaust system produces 30 dB.

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112 | Theory Adjustment to the ear

NR Curves El nivel de presion sonora

Because of the ear’s varying sensitivity at different frequencies, the same sound level in both low and high frequencies can be perceived as two different sound levels. As a rule, we perceive sounds at higher frequencies more easily than at lower frequencies. A filter The sensitivity of the ear also varies in response to the sound’s strength. A number of so called weighting filters have been introduced to compensate for the ear’s variable sensitivity across the octave band. A weighting filter A is used for sound pressure levels below 55 dB. Filter B is used for levels between 55 and 85 dB, and filter C is used for levels above 85 dB. Attenuation (dB)

Frecuencia media (Hz)

Medium frequency for octave band (Hz)

Figure 18: Damping with different filters The A filter, which is commonly used in connection with ventilation systems, has a damping effect on each octave band as shown in table 2. The resultant value is measured in dB(A) units. Hz

63

125

250

500

1k

2k

4k

8k

dB

-26,2

-16,1

-8,6

-3,2

0

+1,2

+1,2

-1,1

Table 2: Damping with the A filter There are also other ways of compensating for the ear’s sensitivity to different sound levels, apart from these filters. A diagram with NR curves (Noise Rating) shows sound pressure and frequency (per octave band). Points on the same NR curve are perceived as having the same sound levels, meaning that 43 dB at 4000 Hz is perceived as being as loud as 65 dB at 125 Hz. Sound attenuation Sound attenuation is principally achieved in two ways: either by absorption or by reflection of the sound. Attenuation by absorption is achieved by internal insulation in ducts, by special silencers or by means of the room’s own sound absorption. Attenuation by reflection is achieved by forking or bending, or when the sound bounces back from a supply-air device into the duct, which is referred to as end reflection. The degree of sound attenuation can be calculated by using tables and diagrams presented in the relevant supplier’s technical documentation.

Theory Air distribution products There are essentially two ways of ventilating a building: ventilation by displacement and ventilation by diffusion. Ventilation by diffusion is the preferable method for supplying air in situations requiring what is known as comfort ventilation. This is based on the principle of supplying air outside the occupied zone which then circulates the air in the entire room. The ventilation system must be dimensioned so that the air which circulates in the occupied zone is comfortable enough, in other words the velocity must not be too high and the temperature must be more or less the same throughout the zone. Ventilation by displacement is chiefly used to ventilate large industrial premises, as it can remove large volumes of impurities and heat if properly dimensioned. The air is supplied at low velocity directly into the occupied zone. This method provides excellent air quality, but is less suitable for offices and other smaller premises because the directional supply-air terminal device takes up a considerable space and it is often difficult to avoid some amount of draught in occupied areas.

Ventilation by diffusion The air is blown in from one or more air streams outside the occupied zone.

The theory section which follows will discuss what happens to the air in rooms ventilated by diffusion, how to calculate air velocity and displacement in the room, and also how to select and position a directional supply-air terminal device correctly in the premises. Ventilation by diffusion

Ventilation by displacement

An air stream which is injected into a room will attract, and mix together with, large volumes of ambient air. As a result, the air stream’s volume increases while at the same time the air velocity is reduced the further into the room it travels. The mixing of the surrounding air into the air stream is termed ‘induction’.

Air which is somewhat cooler than the ambient air flows at low velocity into the occupied zone.

Occupied zone

Figure 19: Induction of the surrounding air into the air stream. The air movements caused by the air stream very soon mix all the air in the room thoroughly. Impurities in the air are not only attenuated but also evenly distributed. The temperatures in the different parts of the room are also evened out. When dimensioning for ventilation by diffusion, the most important consideration is to ensure that the air velocity in the occupied zone will not be too high, as this will be experienced as a draught.

The occupied zone is that part of the room normally occupied by people. This is usually defined as being a space 50 cm from an outer wall with windows, 20 cm from other walls, and up to 180 cm above the floor.

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114 | Theory Air stream theory

α = the discharge angle The discharge angle According to ASHRAE’s Handbook (AHRAE,1996) the distribution of an air stream has a constant angle of 20-24° (22° on average). The shape of the vent, the geometry of the room and also the number of vents all have an effect on the discharge angle. Diffusers and valves with plates or other details which spread the air can produce a wider discharge angle, but even after a relatively short distance from the valve opening, these air streams have a distribution of between 20 and 24°.

The figure below shows an air stream that is formed when air is forced into a room through an opening in the wall. The result is a free air stream. If it also has the same temperature as the rest of the room, it is referred to as a free isotherm stream. To begin with, this section will only deal with streams of this type. Distribution and shape The air stream actually consists of several zones with different flow conditions and air velocities. The area which is of most practical interest is the main section. The centre velocity, the velocity around the centre axis, is in inverse proportion to the distance from the diffuser or valve, i.e. the further away from the diffuser the slower the air velocity. The air stream is fully developed in the main section, and the prevailing conditions here are the ones that will principally affect the flow conditions in the room as a whole.

Calculation of air velocity For a conical or radial air stream: vx =K· v0

Aeff x

Aeff =

q v0

where x - distance from the diffuser/valve, ft (m) vx - centre velocity at distance x, ft/min (m/s) v0 - velocity at the diffuser/ valve outlet, ft/min (m/s) Aeff - the diffuser/valve’s effective outlet area, ft2 (sq.m) q - volume through the vent, ft3/min (cub.m/s)



Figure 20: The main section of the air stream, the centre velocity vx and discharge angle. The shape of the diffuser or valve opening determines the shape of the air stream. Circular or rectangular openings produce a conic (axial) stream, and this also applies to very long and narrow openings.

For a flat air stream: vx = v0

Main section, with a cross section (darker)

h x

where x - distance from the diffuser/valve, ft (m) vx - centre velocity at distance x, ft/s (m/s) v0 - velocity at the diffuser/ valve outlet, ft/s (m/s) K - the diffuser coefficient h - the height of the slot, ft (m)

To produce a completely flat air stream, the opening must be more than ten times as wide as it is high, or nearly as wide as the room so that the walls prevent the stream widening out laterally. Radial air streams are produced by completely circular openings where the air can spread in all directions, as is the case with a supply-air diffuser.

The velocity at the cross section of the air stream will be: v vx

=

[ (

y 1 - 0,3 · x

)]

1,5 2

where y - vertical distance from the central axis, ft (m) x - distance from the diffuser/valve, ft (m) v - velocity at distance y, ft (m)

Conical Radial Flat Figure 21: Different kind of air streams

Theory Velocity profile It is possible to calculate mathematically the air velocity in each part of the stream. To calculate the velocity at a particular distance from the diffuser or valve, it is necessary to know the air velocity at the diffuser/valve outlet, the shape of the diffuser/valve and the type of air stream produced by it. In the same way, it is also possible to see how the velocities vary in every cross section of the stream. Using these calculations as the starting point, velocity curves for the entire stream can be drawn up. This enables one to determine the areas which have the same velocity. These areas are called isovels. By checking that the isovel corresponding to 0.2 m/s is outside the occupied zone, one can ensure that the air velocity will not exceed this level in the normally occupied areas.

Figure 22: The different isovels of an air stream

Theoretical calculation of the diffuser coefficient i 1,5 K= ε · C b i - impulse factor indicating impulse dissipation at point where air is blown in (i